--- title: "WAEC Computer Hardware and GSM Repairs Areas of Concentration 2027/2028" url: https://examloaded.com/waec-computer-hardware-and-gsm-repairs-areas-of-concentration/ date: 2026-10-13 modified: 2026-10-16 lang: en author: "Rabiu Francis" description: "See the WAEC Computer Hardware and GSM Repairs Areas of Concentration 2027/2028, including phone components, troubleshooting, PCB repairs, flashing, tools and workshop management. The WAEC Computer Hardware and GSM Repairs..." categories: - "2027 Official WAEC Exam Insights: Practice Questions, and Syllabus" tags: - "WAEC Areas of concentration 2027" image: https://examloaded.com/wp-content/uploads/2026/10/WAEC-Computer-Hardware-and-GSM-Repairs-Areas-of-Concentration-2027-2028.webp word_count: 3901 --- # WAEC Computer Hardware and GSM Repairs Areas of Concentration 2027/2028 See the WAEC Computer Hardware and GSM Repairs Areas of Concentration 2027/2028, including phone components, troubleshooting, PCB repairs, flashing, tools and workshop management. The **WAEC Computer Hardware and GSM Repairs Areas of Concentration 2027/2028** will help you organise your revision around the major theory and practical skills covered in the syllabus. [![WAEC Computer Hardware and GSM Repairs Areas of Concentration 2027/2028](https://examloaded.com/wp-content/uploads/2026/10/WAEC-Computer-Hardware-and-GSM-Repairs-Areas-of-Concentration-2027-2028-300x173.webp)](https://examloaded.com/waec-computer-hardware-and-gsm-repairs-areas-of-concentration/waec-computer-hardware-and-gsm-repairs-areas-of-concentration-2027-2028/)WAEC Computer Hardware and GSM Repairs Areas of Concentration 2027/2028 This subject requires you to understand how mobile phones work, identify hardware and electronic components, use repair tools correctly, diagnose hardware and software faults, read PCB circuit layouts, carry out maintenance procedures and understand how a mobile-phone repair workshop is set up and managed. **READ:** [Access 2027 WAEC Questions and Answers in all Subjects – Free Study Guide](/waec-questions-and-answers/) **ALSO READ:** [WAEC Specimens 2027](/waec-specimens-practicals/) The syllabus is designed to assess your ability to carry out fault finding and systematic repairs, analyse mobile-phone PCB circuits, use troubleshooting techniques and work safely in a repair environment. It also covers the business side of setting up and managing a repair enterprise. Use this guide together with the complete syllabus and practical training. **READ ALSO:** [WAEC Computer Hardware and GSM Repairs Syllabus 2027/2028 PDF Download](/waec-computer-hardware-and-gsm-repairs-syllabus/) ## WAEC Computer Hardware and GSM Repairs Areas of Concentration at a Glance The major areas you should concentrate on include: - Mobile-Phone Acronyms and Terminologies - Mobile-Phone Bands - Types of Mobile Phones - Phone Accessories - Phone Menus and Sub-Menus - Service Providers and Service Codes - Basic Computer Concepts - Computer Hardware - Computer Software - Internet Concepts - Web Browsing - Mobile Internet Technologies - Structure of Mobile Phones - Mobile-Phone Block Diagram - Power Unit - Memory Unit - Radio Unit - Mobile-Phone Hardware Components - Mobile-Phone Software Components - Electronic Components - Resistors - Capacitors - Diodes - Transistors - Integrated Circuits - Preventive Maintenance - Corrective Maintenance - Cleaning - Soldering - De-Soldering - Re-Balling - Hardware Repair Tools - Software Repair Tools - Multimeter - Oscilloscope - Soldering Iron - Flashing Software - Unlocking Software - Firmware Installation - Workshop Safety - First Aid - Fire Safety - Common Hardware Faults - Common Software Faults - Phone Disassembly - Phone Assembly - Component Testing - Basic Troubleshooting - Hardware Fault Finding - Software Fault Finding - PCB Circuit Layout - Schematic Diagrams - Visual Inspection - Continuity Testing - Open-Circuit Faults - Short-Circuit Faults - PCB Voltage Testing - Metering Methods - Signal Tracing - Signal Injection - Component Testing - SMD Troubleshooting - BGA Troubleshooting - Phone Flashing - Phone Unlocking - Security Resetting - Workshop Setup - Workshop Equipment - Capital - Personnel - Choice of Location - Risk Analysis - Costing - Return on Investment - Supervised Apprenticeship These topics follow the major sections of the syllabus, from mobile-phone basics through troubleshooting and workshop management. ## Introduction to Mobile Phones and Service Providers The first major area introduces the basic terminology and features of mobile phones. You should understand: - Mobile-phone acronyms - Mobile-phone terminologies - Frequency bands - Types of phones - Accessories - Menus and sub-menus - Service providers - Service codes ## Mobile-Phone Acronyms and Terminologies You should be familiar with common terms such as: - GSM - CDMA - Mobile phone - Cell phone - User equipment - MMS - SMS - Call barring - Call forwarding - BSI - DCT - FPS Do not memorise abbreviations only. For each term, understand: - Full meaning where applicable - Function - Where it is used - How it relates to mobile-phone operation ## Mobile-Phone Bands The syllabus includes: - Single band - Dual band - Tri-band - Quad-band You should understand the meaning and uses of the different bands. ## Types of Mobile Phones The syllabus identifies phone types such as: - Straight - Flip - Slide and requires you to understand their special maintenance needs. For each type, know: - Physical design - Opening mechanism - Possible points of wear - Maintenance considerations ## Mobile-Phone Accessories Study accessories such as: - Headsets - Hands-free devices - Earpieces - External Bluetooth devices - Batteries - Chargers - Cables For every accessory, know its function. ## Phone Menus and Sub-Menus The syllabus includes menus such as: - Phone book - Messages - Calls - Settings - Applications You should understand what each menu is used for and how phone menus may assist in configuration and fault finding. ## Service Providers and Service Codes You should know the major voice service providers and the service codes covered during your training. Understand how these codes relate to mobile-network services. ## Basic Computer Concepts Computer knowledge is included because computers are important in software repairs, flashing, firmware installation and access to technical resources. The syllabus requires identification and understanding of hardware and software components. ## Computer Hardware Study components such as: - Monitor - CPU or System Unit - Keyboard - Other basic computer hardware For each component, know: - Identification - Function - Basic operation ## Computer Software Understand the difference between: - Operating software - Application software You should know how software supports computer operations and repair activities. ## Internet Concepts The syllabus includes an introduction to the Internet and web browsing. Study: - Meaning of Internet - Internet access - Browsing - Downloading - Uploading ## Mobile Internet Technologies The syllabus mentions: - WAP - GPRS - EDGE - Wi-Fi - 3G Know their basic uses in accessing mobile data and online services. ## Using Internet Resources for Repairs The syllabus expects you to understand how Internet resources, data manuals, service manuals and troubleshooting manuals can assist repair work. You should understand how technical information can help you: - Identify components - Check specifications - Read repair procedures - Locate firmware - Understand error information - Trace faults ## Essential Components of Mobile Phones This area covers the internal structure of mobile phones and the components responsible for different operations. The syllabus includes: - Mobile-phone structure - Hardware components - Software components ## Mobile-Phone Block Diagram The basic block diagram in the syllabus includes: - Power Unit - Memory Unit - Radio Unit You should know the function of each block. ### Power Unit Understand the role of the power section in supplying and controlling electrical power within the phone. ### Memory Unit Understand how the memory section stores information required by the phone. ### Radio Unit Understand the role of the radio section in sending and receiving communication signals. ## Mobile-Phone Hardware Components The syllabus specifically includes components such as: - CPU - SIM Socket - Earpiece - Keypad - Buzzer - Vibrator For each component, revise using: **Name → Identification → Function → Possible Fault → Test → Repair** ## CPU Understand the CPU as an important control component within the phone. Know its basic function and relationship with other parts of the phone. ## SIM Socket Study: - Function - Physical identification - Common connection problems - Fault symptoms A damaged or poorly connected SIM socket can lead to SIM-related problems. ## Earpiece Understand the function of the earpiece and how to identify faults related to incoming sound. ## Keypad Study: - Function - Contact arrangement - Common keypad faults - Basic maintenance ## Buzzer and Ringer Understand their function in producing sound alerts. ## Vibrator Know the role of the vibrator and how it may be tested when faulty. ## Mobile-Phone Software Components The syllabus includes: - Operating software - Application software Understand how software faults can affect a phone even when the physical components appear normal. ## Electronic Components in Mobile Phones The syllabus lists basic electronic components including: - Resistors - Capacitors - Diodes - Transistors - Integrated Circuits This is one of the most important areas for hardware troubleshooting. ## Resistors Study: - Identification - Function - Basic testing - Circuit use Understand that resistors control or limit electrical quantities in a circuit. ## Capacitors Study: - Function - Identification - Testing - Common fault behaviour ## Diodes Understand: - Basic function - Directional behaviour - Testing ## Transistors Study their basic role in: - Switching - Signal control ## Integrated Circuits Integrated Circuits perform important functions on mobile-phone circuit boards. You should be able to identify common ICs taught during your practical training. ## Preventive Maintenance Preventive maintenance is carried out to reduce the chances of a fault developing. The syllabus requires you to understand: - Definition - Function - Reasons - Advantages - Procedures ## Preventive Maintenance Procedures The syllabus mentions procedures such as: - Cleaning - Soldering - De-soldering - Re-balling Understand the purpose of each procedure. ## Corrective Maintenance Corrective maintenance is carried out after a fault occurs. Study: - Meaning - Fault diagnosis - Repair procedures - Component replacement - Final testing You should clearly understand the difference between preventive and corrective maintenance. ## Soldering Soldering is an important practical skill. Study: - Soldering iron - Soldering procedure - Joining components - Temperature control - Safety Poor soldering can cause: - Weak joints - Short circuits - Damaged tracks - Damaged components ## De-Soldering Understand how components are removed from a PCB. Know the role of tools such as: - Solder sucker - Suitable soldering equipment ## Re-Balling Re-balling is specifically listed among the maintenance procedures. Understand: - Meaning - Purpose - Components where it may be used - Required care ## Hardware Repair Tools The syllabus requires identification and use of hardware repair equipment. Examples include: - Star screwdrivers - Allen keys - Precision sets - Multimeters - Oscilloscopes - Computer sets - Soldering irons - Solder suckers For every tool, know: **Name → Identification → Function → Correct Use → Safety** ## Multimeter The multimeter is especially important. You should know how it is used for: - Continuity testing - Voltage testing - Resistance checks - Component checks ## Oscilloscope Understand how an oscilloscope is used to observe and analyse signals. ## Precision Tool Set Know how precision tools help with: - Opening devices - Removing screws - Handling small components ## Soldering Iron Know: - Function - Correct handling - Safety - Care ## Software Repair Tools The syllabus includes software repair tools such as: - Unlocking software - Flashing software - Firmware installation tools ## Flashing Software Study: - Meaning of flashing - Flashing software - Flashing devices - Uses ## Firmware Installation Understand why firmware may need to be installed or reinstalled during a repair. ## Unlocking Software Study the role of unlocking tools in supported phone-security and service-related repairs. ## Safety in the Mobile-Phone Workshop Safety should be one of your strongest practical areas. The syllabus requires: - Safety rules - Safe use of tools - Workshop safety facilities ## Workshop Safety Rules Understand safe practices when handling: - Soldering irons - Electrical tools - Batteries - Sharp tools - Circuit boards - Power supplies Always maintain an organised work area. ## First Aid The syllabus includes the First Aid Box among basic workshop safety facilities. Understand why immediate first-aid support is important in a repair environment. ## Fire Extinguisher Fire extinguishers are also included in the syllabus. Know their importance in a workshop where electrical and heating equipment are used. ## Common Hardware Problems The syllabus specifically mentions hardware problems such as: - Damaged screen - Charging-port problems - Mouthpiece faults - Earpiece faults - Keyboard faults For each problem, use this revision pattern: **Symptom → Possible Cause → Test → Repair** ## Damaged Screen Study: - Physical damage - Display failure - Connection problems - Testing - Replacement ## Charging-Port Faults Understand faults involving: - Damaged ports - Loose ports - Charging connections Know how to inspect and test the charging section. ## Mouthpiece Faults Understand the symptoms of a faulty mouthpiece and how it is tested. ## Earpiece Faults Study how to diagnose incoming-audio problems. ## Keyboard Faults Understand: - Physical damage - Contact issues - Cleaning - Replacement where necessary ## Common Software Problems The syllabus lists problems such as: - Contact Service Provider - Phone Lock Code - Invalid SIM - SIM Card Rejected It also mentions: - SIM Locked - SIM Rejected - Hanging - Restart Problem You should know how to recognise when a problem is likely to be software-related. ## Basic Troubleshooting Troubleshooting is one of the central skills in this subject. The syllabus requires disassembly, assembly, testing and troubleshooting of components such as: - Displays - Speakers - Vibrators - Ringers - Charging Ports - Charging Jacks - Batteries - Keypads - Panels ## Systematic Troubleshooting Procedure A useful approach is: - Listen to the complaint. - Inspect the phone. - Identify possible causes. - Test the suspected section. - Trace the fault. - Confirm the faulty component or software. - Repair the fault. - Test the phone again. Do not replace components without first confirming the likely fault. ## Disassembling Mobile Phones You should know how to safely open a device without damaging: - Screws - Panels - Flex cables - Connectors - Internal components ## Assembling Mobile Phones You should also know how to return all parts to their correct positions after repair. ## Component Testing Always test suspected components where possible before replacement. ## Troubleshooting Through Menus The syllabus includes troubleshooting through relevant mobile-phone menus. Know how areas such as: - Settings - Network options - Security settings - Applications may help during diagnosis. ## Identification of Mobile-Phone ICs The syllabus requires identification of mobile-phone ICs and electronic components. Practise using actual circuit boards. ## PCB Circuit Layout A Printed Circuit Board layout shows the physical positions and connections of components. The syllabus specifically includes reading PCB circuit layouts. You should understand how to: - Locate circuit sections - Identify components - Follow tracks - Locate test points ## Schematic Diagrams Study how schematic diagrams represent electrical circuits using symbols. You should be able to: - Recognise component symbols - Trace connections - Follow circuit paths - Relate the schematic to the PCB ## Hardware Fault Finding The syllabus includes practical hardware fault-finding techniques. Important areas include: - Visual inspection - Continuity testing - Open circuits - Short circuits - Voltage testing - Metering - Signal tracing - Signal injection - Component testing ## Visual Inspection Start many repairs by visually examining the device. Look for: - Burnt components - Corrosion - Broken tracks - Damaged connectors - Loose components - Cracked parts ## Continuity Testing Understand how to use a multimeter to check whether an electrical path is complete. This is useful for identifying: - Broken tracks - Open circuits - Damaged connections ## Open-Circuit Faults Understand what happens when a circuit path is broken. Know how continuity testing can help locate an open circuit. ## Short-Circuit Faults Study: - Meaning - Symptoms - Testing techniques A short circuit can affect power supply and other sections of a phone. ## PCB Voltage Testing The syllabus includes testing voltage levels: - At different points on the PCB - At IC pins You should know how to use the correct meter settings and test points. ## Metering Methods Understand how meters can be used during fault diagnosis. ## Signal Tracing Signal tracing involves following a signal through the circuit to locate where it stops or changes incorrectly. ## Signal Injection Understand the basic principle of introducing a known signal into a circuit during troubleshooting. ## Component Testing Learn how electronic components can be tested before replacement. ## SMD Troubleshooting The syllabus includes **Surface Mount Devices**. Study: - Identification - Handling - Testing - Removal - Replacement where applicable ## BGA Troubleshooting The syllabus also includes **Ball Grid Array** components. Understand: - Basic identification - Fault diagnosis - Re-balling These components require careful handling and appropriate tools. ## Software Fault Finding Software troubleshooting is another major area. The syllabus includes: - Software codes - SIM lock faults - SIM rejection - Hanging problems - Restart problems ## Software Codes Understand how relevant software or service codes can assist with diagnosis. ## Hanging Problems Study possible software-related causes of a phone freezing or becoming unresponsive. ## Restart Problems Understand how repeated restarting may relate to software faults and the troubleshooting steps taught during practical training. ## Phone Flashing The syllabus specifically includes: - Flashing devices - Flashing software - Their uses You should understand the complete process taught during your practical sessions. ## Phone Lock and Security Unlocking Study: - Phone lock - Security unlocking - Counter resetting Know the procedures covered during supervised training. ## Setting Up a Mobile-Phone Workshop The syllabus does not focus only on repair work. It also covers how to establish a repair business. The major areas include: - Workshop setup - Facilities and equipment - Business management ## Capital Understand the financial resources needed to establish a repair workshop. Study factors such as: - Tools - Equipment - Rent - Materials - Operating expenses ## Personnel Understand the role of skilled workers and other personnel required for a repair business. ## Choice of Location The syllabus specifically includes factors determining the choice of workshop location. Understand how location may affect: - Customer access - Cost - Security - Visibility - Business performance ## Workshop Facilities and Equipment You should be able to identify the facilities and equipment needed for a properly organised repair workshop. ## Managing a Mobile-Phone Repair Business The syllabus includes: - Risk Analysis - Costing - Return on Investment ## Risk Analysis Understand the risks connected with operating a repair business. These may involve: - Customer devices - Tools - Electrical equipment - Financial loss - Workshop safety ## Costing Understand how to determine the cost of carrying out repairs. Costs may involve: - Replacement components - Labour - Materials - Operating expenses ## Return on Investment Understand the basic relationship between: - Resources invested - Revenue generated - Profitability ## Supervised Apprenticeship Practical training is a major requirement of the syllabus. Candidates are required to complete a **minimum cumulative total of eight weeks of apprenticeship** in an accredited repair and maintenance centre. Use the apprenticeship period to practise: - Component identification - Tool handling - Phone disassembly - Phone assembly - Soldering - De-soldering - Hardware troubleshooting - Software troubleshooting - PCB inspection - Workshop safety ## Important Workshop Equipment to Know The syllabus provides a list of equipment expected for practical training. Important items include: - Scrap Mobile Phones - Mobile-Phone Manuals - Mobile Phones - Service-Code Charts - Phone Accessories - Data Cables - Oscilloscopes - Multimeters - Brushes - Soldering Irons - Safety Charts - Hammers - Spanners - Tweezers - PCB Board Holders - Cutters - Magnifying Desk Lamps - Ultrasonic Cleaners - Re-Balling Kits - Flashing and Unlocking Devices - Cables and Wires - DC Regulated Power Supplies For each important item, know: **Name → Identification → Function → Safe Use** ## Multimeter Practical Skills Make sure you understand how to use a multimeter for: - Continuity - Voltage - Resistance - Basic component testing Practise using the correct probes and measurement mode. ## Oscilloscope Practical Skills Understand the use of an oscilloscope in checking electrical signals. ## DC Regulated Power Supply Know how a regulated power supply is used when testing or powering devices during repair. ## PCB Board Holder Understand how a PCB holder keeps the circuit board stable during: - Soldering - De-soldering - Inspection - Component replacement ## Magnifying Desk Lamp Know how magnification can assist in finding: - Cracks - Corrosion - Broken tracks - Poor solder joints - Small damaged components ## Ultrasonic Cleaner Understand the purpose of an ultrasonic cleaner in relevant cleaning procedures. ## Re-Balling Kit Know the purpose of a re-balling kit when working with suitable BGA components. ## Flashing and Unlocking Devices Understand the functions of these devices in software maintenance. ## Practical Faults You Should Be Able to Diagnose Give strong attention to faults involving: - Display - Earpiece - Mouthpiece - Speaker - Buzzer - Ringer - Vibrator - Battery - Charging Port - Charging Jack - Keypad - SIM Socket - Phone Lock - SIM Lock - SIM Rejection - Hanging - Restarting For each fault, practise this order: **Complaint → Inspection → Possible Cause → Test → Confirmation → Repair → Retest** ## Important Hardware Skills to Practise Make sure you are comfortable with: - Phone disassembly - Phone assembly - PCB inspection - Component identification - Continuity testing - Voltage testing - Short-circuit diagnosis - Open-circuit diagnosis - Soldering - De-soldering - Re-balling - SMD handling - BGA troubleshooting ## Important Software Skills to Practise Give attention to: - Software fault identification - Flashing - Firmware installation - Supported unlocking procedures - Security resetting - Phone-menu troubleshooting - Service-code use ## Important Tools to Identify You should be able to identify and state the functions of: - Multimeter - Oscilloscope - Soldering Iron - Solder Sucker - Precision Screwdriver Set - Tweezer - PCB Board Holder - Magnifying Lamp - Ultrasonic Cleaner - Re-Balling Kit - Flashing Device - Data Cable - DC Regulated Power Supply ## Best Order to Study WAEC Computer Hardware and GSM Repairs A useful study order is to move from basic knowledge to practical troubleshooting. ### Stage 1 Mobile-Phone Basics Start with: - Terminologies - Phone Bands - Phone Types - Accessories - Menus - Service Providers ### Stage 2 Computer and Internet Basics Continue with: - Computer Hardware - Computer Software - Internet - Web Browsing - Mobile Internet Technologies ### Stage 3 Phone Components Study: - Block Diagram - Power Unit - Memory Unit - Radio Unit - Hardware Components - Software Components - Electronic Components ### Stage 4 Maintenance Study: - Preventive Maintenance - Corrective Maintenance - Cleaning - Soldering - De-Soldering - Re-Balling - Repair Tools - Workshop Safety ### Stage 5 Troubleshooting Study: - Hardware Faults - Software Faults - Disassembly - Assembly - Component Testing - PCB Layout - Schematics - Continuity - Voltage Testing - Signal Tracing - SMD - BGA ### Stage 6 Software Repair Study: - Software Codes - Flashing - Firmware - Unlocking - Security Resetting ### Stage 7 Workshop Management Finish with: - Capital - Personnel - Location - Workshop Equipment - Risk Analysis - Costing - Return on Investment Continue practical training while studying each stage. ## How to Use These Areas of Concentration ### Start With the Complete Syllabus Use the complete subject syllabus as your main checklist. **READ ALSO:** [WAEC Visual Art Areas of Concentration 2027/2028](/waec-visual-art-areas-of-concentration/) ### Practise With Actual Components Do not learn components only from notes. Where possible, practise identifying: - Resistors - Capacitors - Diodes - Transistors - ICs - SIM Sockets - Charging Ports - Speakers - Vibrators - Keypads ### Learn Tools by Using Them Under proper supervision, practise with actual: - Multimeters - Soldering Irons - Oscilloscopes - PCB Holders - Regulated Power Supplies ### Build a Fault-Finding Habit Use a systematic procedure rather than guessing. A useful rule is: **Inspect → Test → Trace → Confirm → Repair → Retest** ### Connect Symptoms With Possible Causes For every common problem, create notes containing: **Symptom → Possible Causes → Test → Repair** For example, a charging problem may require you to inspect more than one part of the charging section rather than replacing the charging port immediately. ### Use Your Apprenticeship Well The syllabus requires supervised apprenticeship, so use the period to gain real troubleshooting experience. Keep a notebook of faults you encounter and record: - Complaint - Diagnosis - Tool used - Fault found - Repair carried out - Final result ## What Should You Concentrate on Most for WAEC Computer Hardware and GSM Repairs You should cover the complete syllabus, but make sure you are especially confident in: - Mobile-Phone Terminology - Mobile-Phone Components - Electronic Components - Computer and Internet Basics - Repair Tools - Preventive Maintenance - Corrective Maintenance - Workshop Safety - Hardware Faults - Software Faults - Troubleshooting - Continuity Testing - Voltage Testing - PCB Circuit Layouts - Schematic Diagrams - SMD and BGA Troubleshooting - Soldering and De-Soldering - Re-Balling - Flashing - Firmware Installation - Unlocking - Workshop Setup - Business Management These areas combine the major theory and practical skills expected by the syllabus. ## Frequently Asked Questions ### What Are the WAEC Computer Hardware and GSM Repairs Areas of Concentration for 2027 The major areas include mobile-phone components, basic computer and Internet concepts, electronics, maintenance, repair tools, hardware faults, software faults, troubleshooting, PCB circuits, flashing, unlocking and workshop management. ### What Should I Focus on Most Give strong attention to component identification, repair tools, hardware and software troubleshooting, PCB diagrams, soldering, flashing and practical fault diagnosis while covering the complete syllabus. ### Is Computer Hardware Part of the Syllabus Yes. The syllabus covers basic computer concepts and the identification and functions of computer hardware and software. ### Is Troubleshooting Important Yes. Troubleshooting is one of the central areas of the subject and includes component testing, PCB reading, metering, signal tracing and fault finding. ### Should I Study Electronic Components Yes. You should know components such as resistors, capacitors, diodes, transistors and ICs. ### Should I Know How to Use a Multimeter Yes. A multimeter is one of the important repair tools included in the syllabus and is useful for continuity and voltage testing. ### Is PCB Reading Important Yes. The syllabus specifically includes PCB circuit layouts and schematic diagrams. ### Should I Study Soldering Yes. Soldering and de-soldering are included among the maintenance procedures. ### Is Re-Balling Included Yes. Re-balling is specifically included among the maintenance procedures, and the equipment list also contains re-balling kits. ### Does the Syllabus Include Flashing Yes. The syllabus includes flashing devices, flashing software and their uses. ### Does It Include Phone Unlocking Yes. Phone-lock and security unlocking or resetting are included. ### What Hardware Problems Should I Study Examples listed in the syllabus include damaged screens, charging ports, mouthpieces, earpieces and keyboards. ### What Software Problems Should I Study The syllabus includes SIM-related faults, phone locks, hanging and restarting problems. ### Is Workshop Safety Important Yes. You should know workshop safety rules, safe use of tools, First Aid and fire-safety facilities. ### Does the Subject Include Business Management Yes. The syllabus covers workshop setup, capital, personnel, location, risk analysis, costing and return on investment. ### Is Apprenticeship Required The syllabus states that candidates should complete a minimum cumulative total of **eight weeks of supervised apprenticeship** in an accredited repair and maintenance centre. ### Where Can I Download the Complete Syllabus Use the [WAEC Computer Hardware and GSM Repairs Syllabus 2027/2028 PDF Download](/waec-computer-hardware-and-gsm-repairs-syllabus/) page to access the complete syllabus. ### Where Can I Find Areas of Concentration for Other Subjects Use the [WAEC Areas of Concentration 2027/2028 for All Subjects](/waec-areas-of-concentration-for-all-subjects/) page to access the other subject guides. ## Conclusion The **[WAEC](https://www.waecnigeria.org/) Computer Hardware and GSM Repairs Areas of Concentration 2027/2028** give you a practical structure for organising your preparation. Your revision should cover mobile-phone terminologies, phone components, computer and Internet basics, electronic components, repair tools, maintenance procedures, workshop safety, hardware faults, software faults, PCB circuit layouts, troubleshooting, soldering, de-soldering, re-balling, flashing, unlocking and workshop management. Do not prepare for this subject through theory alone. You should be able to identify real components and tools, dismantle and assemble devices carefully, use measuring equipment, trace faults systematically and understand the repair procedure required for common hardware and software problems. Use the supervised apprenticeship period to gain practical experience, and use the complete syllabus as your checklist until you are comfortable with both the theory and practical requirements. **READ ALSO:** [WAEC Computer Hardware and GSM Repairs Syllabus 2027/2028 PDF Download](/waec-computer-hardware-and-gsm-repairs-syllabus/) **READ ALSO:** [WAEC Areas of Concentration 2027/2028 for All Subjects](/waec-areas-of-concentration-for-all-subjects/) **READ ALSO:** [WAEC Syllabus 2027/2028 PDF Download for All Subjects](/waec-syllabus-for-all-subjects-pdf-download/) **READ ALSO:** [WAEC Timetable 2027](/waec-timetable-for-science-art-and-commercial/)