GSM Phone Repairs and Mintenance

Are you about starting a cell phone repair business? If YES, here is a complete Training for cell phone repair. Cell phones are a very essential commodity that nearly every one owns. This is because of the need to keep in touch with people and be abreast with things. This is essentially one of the reasons why there has been the emergence of various cell phone companies.

These experts make sure that they come up with the best technology options for all those who buy their brand. There are times when phones may begin to pose a challenge. Those who already have gone to learn the ropes of how phones are repaired know the importance of solving all phone problems. One of the ways which you are able to learn how to repair phones is by going to a skill school where you can learn the ropes as well as go to a business school where you can be taught how to manage a business.

PREAMBLE

This syllabus is designed to assess candidates’ basic skills of maintenance of mobile phones, in terms of knowledge and competence in fault finding and systematic repairs. It also assesses candidates’ knowledge of setting up and managing a mobile phone maintenance and repair enterprise.

AIMS AND OBJECTIVES

The aims and objectives of the syllabus are to test candidates’ knowledge and understanding of:

1.      Basic concept and terminologies

2.      Tracing, testing, trouble shooting, maintenance and repairs of mobile phones

3.      Analyzing mobile phones PCB circuits

4.      Different fault finding techniques

5.      Using internet resources, data manuals, service manuals and trouble-shooting manuals

6.      General safety precaution in mobile phones repair and maintenance

7.      The requirement for setting up and successfully running a mobile phone maintenance and repair business

DETAILED SYLLABUS

A.     INTRODUCTION TO MOBILE PHONES AND SERVICE PROVIDERS

1.      Mobile phones acronyms and terminologies

2.      Mobile phone bands and their uses

3.      Types of mobile phones

4.      Phone accessories and their functions

5.      Types of menus and sub-menus

6.      Service providers and their codes

B.     BASIC COMPUTER AND INTERNET CONCEPTS.

1.      Introduction to computer Definition of mobile phones and its terminologies should include GSM, CDMA, mobile phones/cell phones/user equipment, MMS, SMS, call barring, call forwarding, BSI, DCT, FPS etc. Band—single, double, tri and quad bands and their uses. Mobiles phone types—straight, flip, slides etc. and their special maintenance needs.

         All phone accessories including; headsets/hands free, earpiece, external Bluetooth, batteries, chargers, cables etc. and their functions.

         Menus and sub-menus including; phone book, message, call, settings, applications etc. and their functions

         Major voice service providers and their service codes.

         Definition, identification and functions of various computer hardware (monitor, CPU, keyboard etc.) and software (operating and

2.      Introduction to internet

3.      Browsing the web

C.     ESSENTIAL COMPONENTS OF MOBILE PHONES AND THEIR FUNCTIONS

1.      Structure of mobile phones

2.      Hardware components

3.      Software components

D.     MAINTENANCE AND REPAIR OF MOBILE PHONES

1       Electronic components in mobile phones

2       Preventive maintenance

3       Corrective maintenance

4       Common tools and equipment for hardware and software repairs. application) components. Web access platform Including; WAP/GPRS/EDGE/Wi-Fi/3G etc. Browsing activities like downloading, uploading etc.

         Basic block diagram (power unit, memory unit and radio unit) and functions of each block.

         Identification, description and functions of various hardware components including CPU, SIM socket, earpiece, keypad, buzzer, vibrator etc.

         Various software components both operating and application software. Resistors, capacitors, diodes, transistors, IC, e.t.c.

         Definitions, functions, reason, advantages and procedures (cleaning, soldering, de-soldering, re-balling etc.) of preventive and corrective maintenance

         Identify common tools and equipment for hardware repairs such as; star, Allen key,

5       Safety in mobile phone workshop

6       Common hardware problems

7       Common software problems

E.     TROUBLE-SHOOTING

1.      Basic trouble-shooting lead, precision set, multi-meter, oscilloscope, computer set soldering iron and sucker etc. and their uses.

         Identify common software tools for repair such as; unlocking software, flashing software firmware installation etc. List safety rules and regulations. Safe use of maintenance tools. Basic safety facilities in the mobile phone workshop (first aid box, fire extinguishers etc.)

1.      Identification of hardware problems such as damaged screen, charging ports, mouthpiece, earpiece, keyboard etc. Identification of software problems such as; ‘contact service provider’, ‘phone lock code’, ‘invalid SIM’, ‘SIM card rejected’ etc. Dissembling and assembling, testing and trouble shooting of component such as displays, speakers, vibrators, ringers, charging ports, charging jacks, batteries, keypads, panels etc.

2.      Trouble shooting/fault finding using relevant mobile phone menus. Identification of mobile phone ICs and electronic components. Reading of PCB circuit layout and schematic diagrams.

3.      Tracing and fault finding in hardware AND Fault finding in software

F.      SETTING UP AND MANAGING MOBILE PHONE WORKSHOP

1.      Setting up a mobile phone work shop

2.      Facilities/equipment for mobile phone workshop.

3.      Managing a mobile phone business Identification of faulty components (using visuals, continuity test, open circuit, short circuit etc.) Test voltages on PCB (voltage levels at various points and voltage specification of IC pins)

         Trouble-shooting techniques—metering methods, signal tracing/injection, component testing, visual inspections etc. Trouble shooting Surface Mount Devices (SMD)/ Ball Grid Array (BGA) etc. Use of software codes for faults finding. Fault find related to software (SIM locked, SIM rejected, hanging problem, restart problem etc.)

         Flashing of mobile phones—flashing devices, flashing software and their uses Phone lock/security unlocking/resetting counters Capital, personnel and factors that determining choice of location Identify appropriate facilities/equipment for a mobile phone workshop. Risk analyses, costing, return on investment etc.

SUPERVISED APPRENTICESHIP (INDUSTRIAL TRAINING)

         Candidates are required to spend a minimum cumulative total of eight weeks of apprenticeship in an accredited repair and maintenance centre.

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