How Cellphones work full tutorial



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This is where you can learn a step-by-step from basic to advanced procedures on how to fix major mobile phone handsets problems such as Nokia, iPhone, Blackberry, Samsung, SonyEricsson, Motorola, HTC, Android, LG, Siemens, Benq and etc. for absolutely 100% Free!
All lessons herein were all simplified and a few general technical terms were reduced to make easy learning and understanding, Images and Pictures were also gathered and chosen appropriately to support every aspect of learning.

These tutorials cover the following step by step lessons:

LESSON 01

Basic Information How Cellphone Works?
Learning with Block Diagram on How basically Cell-phone works?

LESSON 02
Introduction To Basic Electronics

Ohm's Law

Series Circuit

Parallel Circuit

Identifying Electronic Components and Circuit Symbols

Resistors

Capacitors

Transistors

Diodes

Fuse

Coils & Inductors

Crystal Oscillators

RF & IF Amplifiers and Filters

EMI and ESD Filters

LESSON 03

Preparing the Proper Tools For Repairing

Opening Tools and Tweezers

Soldering and Desoldering Tools

Multi Tester

SMD Rework Stations

DC Power Supply

Cleaning Kits

Reballing Kits

Working Table Equipments

LESSON 04

Safety Procedures and Proper Handling of Tools and Test Equipment on Cellphone Repair

How To Use and Read a Multimeter Tester

Test and Checkup Procedures on Basic Electronics Components
LESSON 05

Introduction to
Reading Cellphone's Schematic Diagrams

Identifying Component Symbols and Layout in Schematic Diagram

How to Identify Resistor's Symbols and Layout

How to Identify Capacitor's Symbols and Layout

How to Identify Transistor's Symbols and Layout

How to Identify Diodes Symbols and Layout

How to Identify Coil Symbols and Layout

How to Identify Integrated Circuit Symbols and Layout

How to Identify DC to DC Voltage Drivers, Regulators and
Converters Symbols and Layout

How to Identify EMI-ESD Symbols and Layout

How to Identify RF Filter Symbols and Layout

How to Identify Battery Cell Symbols and Layout

How to Identify Power Switch, Mouthpiece, Earpiece, and Ringtones Speakers User Interface Symbols and Layout

How to Identify Clock Crystal Oscillator Symbols and Layout

How to Identify Fuse Symbol and Layout

How to Identify the Lines and Symbols on Schematic Diagram
LESSON 06
HOW TO FIND AND LOCATE COMPONENTS ON PC BOARD
HOW TO SOLDER SMD COMPONENTS MANUALLY BY HAND

HOW TO REBALL BGA CHIPS MANUALLY BY HAND
Identifying and Familiarization of Common Mobile Phones Components and Spare Parts
Liquid Crystal Display LCD's Touch Screen Panels Microphones Micro Speakers Switches Charging Pins Antenna's Batteries Battery Connectors USB connectors

Familiarization: Components and Parts on Nokia Mobile Phone Handsets
Familiarization: Components and Parts on Samsung Mobile Phone Handsets
Familiarization: Components and Parts on Sony Ericsson Mobile Phone Handsets
Familiarization: Components and Parts on Motorola Mobile Phone Handsets
Familiarization: Components and Parts on iPhone Mobile Phone Handsets
Familiarization: Components and Parts on Blackberry Mobile Phone Handsets
Familiarization: Components and Parts on HTC Mobile Phone Handsets

Understanding Major Integrated Circuits (IC) on Mobile Phones
Power Management IC
Application Processor
Flash IC
RAM IC
Basic Hardware Handling Procedures
Proper Disassembling and Assembling Methods
How to Test Mobile phone Speaker, Buzzer or Ringer
How to Test Mobile phone Microphone or Mouthpiece
How to test Mobile Phone Charger Voltage
How to Test Mobile Phone Vibra Motor
How to check Mobile Phone Battery Voltage
How to test Power ON-OFF Switch

Hardware Troubleshooting Basics
How to Troubleshoot Not Charging Issues
How charging circuit works
No Charging Response
Charger Not Supported
Not Charging
How SIM Circuits works
Insert Sim Card Problem
Invalid Sim Card
How Keypad Circuits Works
How to Map and Trace keypads Lines
Understanding The LED light Circuits
Explanation on How Audio Circuits work
Mouthpiece
Earpiece
Buzzer
Ringer
Headset
Vibra motor
How LCD Display Circuit Works
Understanding How RF circuit works

Basic Mobile Phones Hardware Repair Techniques

Basic on Software Handling
What is Flashing
What is Unlocking

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