mobile repairing notes are based on mobile phone hardware repair technician questions. Mobile repairing notes PDF is the best way to get free access to helpful tips and free mobile phone hardware problems and solutions PDF tutorials to download.
Mobile Repair Tips
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The phone gets moisture during too much calling and develops a fault. When you clean your phone on time and give your phone proper maintenance, you can avoid or prolong the repair service requirements to some extent. You can perform your phone cleaning by reading some mobile repairing tips and tricks pdf.
The different types of faults which usually occur in all Nokia, Samsung, HTC, Apple, Motorola, BlackBerry, Lenovo, Sony, and other brand mobile phones are categorized into two major categories:
- Hardware faults
- Software Faults
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Hardware Faults
The faults that come from physical damage to your phone by you or some other resin are called hardware faults. I list the common hardware faults below:
- Battery problem
- Dead set condition
- Charging problems
- SIM reading problem
- Touch problem
- backlight problem
- Vibrator problem
- Screen Repair
- Backlight problem
- Signal connectivity problem
- Auto Charging problem
- Auto turn off problem
- Camera problem
- Display Problem
- Speaker Problem
Some of these hardware faults are related to Feature Phone Spare Parts and some problems are related to the main Integrated Circuit ICs on Mobile Phone PCB. if you are a computer technician or want to become a mobile phone technician it is important for you to know the basic part of a smartphone, feature phone, and their functions. Lots of Spare Parts are the same on these phones. Let me tell you a list of parts you should know:
- Mobile Phone LCD Screen (Liquid Crystal Display)
- Mobile Battery NiCd or NiMH
- Phone Earpiece Speaker
- Camera Modules
- Vibrate Motor
- Phone Mouthpiece(Mic)
- SIM connector
- Mobile Switches
If you are interested in identifying and knowing more about these parts' functions to understand mobile phone faults? then read Identify Feature Phone Parts and Their Faults Page
When you know smartphone parts functions and their faults, now it's time for you to know Integrated Circuits on a mobile phone PCB. if you know mobile phone IC identification, mobile phone ic details, and about how integrated circuits work? you will be clever enough to know the faults. It decreases the time of finding a fault on phones. And your knowledge of how mobile phone works. Let me tell you a list of integrated circuits you should know:
Antenna Points Problem: If any antenna gets disconnected or carbon on their prints, then there will be no network on the mobile phone.
Antenna Switch IC Problem: If the phone Antenna Switch IC has carbon on its prints or is faulty, then there will be no signal on the mobile phone.
Booster IC Problem: If PF (power frequency) or PA (power amplifier) Booster IC is faulty, then you see a weak network signal in the mobile. Sometimes feature phones may be dead by the booster IC. if this IC is short.
VCO IC Problem: If VCO IC gets damaged, there will be no network signal in the feature phone during calls. “Call ended” or “Call failed” message display on a phone screen.
RF IC Problem: If the RF IC of the feature phone gets damaged, then there will be no network signal on the mobile phone
RX filter IC problem: If the RX filter IC gets damaged, the incoming call signal problem appears during calls on the phone.
TX filter IC problem: If the TX filter IC gets damaged, the outgoing calls signal problem appears during calls on the phone. There will be no outgoing calls.
Audio IC problem: If the Audio IC becomes faulty, it disables the Ear Speaker sound and sometimes causes the Mic of a mobile phone to stop working.
Power IC Problem: If Power IC gets damaged due to any capacitor short circuit in the mobile phone PCB, then the mobile phone gets completely dead.
RTC IC Problem: If RTC Real-Time Clock IC gets damaged by any issue in the mobile phone hardware, then there will be no time and date shown on a mobile screen. Sometimes the mobile phone does get switched on.
The Phone Repairs You Probably Shouldn't Try At Home Read Here
Crystal Clock Oscillator IC problem: If Crystal Clock Oscillator gets faulty, the mobile shows a power-on problem when pressing the power button. The phone doesn't get on immediately. There will be a problem with mobile phone network signals during outgoing calls.
Charging IC problem: If the Charging IC gets faulty, the mobile shows a Bad connecting charging message while charging on a mobile screen. Mobile phones get hot while charging. Mobile stops charging.
ROM IC Problem: If the flash IC gets faulty, Mobile phone software gets hung while used. Hang on a specific menu, for example, inbox, camera, etc. Sometimes mobile phone gets completely dead of the software fault in the ROM IC. if you have depth knowledge of how to do mobile software repair then you can do mobile repairing software these phone notes help you out.
When you know smartphone parts functions and their faults, now it's time for you to know Integrated Circuits on a mobile phone PCB. if you know mobile phone IC identification, mobile phone ic details, and about how integrated circuits work? you will be clever enough to know the faults. It decreases the time of finding a fault on phones. And your knowledge of how mobile phone works. Let me tell you a list of integrated circuits you should know:
- Antenna Points
- Antenna Switch
- Booster IC
- VCO IC
- RF IC
- RX filter IC
- TX filter IC
- Audio IC
- Power IC
- RTC (Simple Silicon Crystal)
- Crystal Oscillator IC
- Charging IC
- ROM IC
- RAM IC
- CPU IC
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Before I explain these IC's problems one by one, you know this post is about Phone Repair PDF Notes. That's why I can't give you in-depth knowledge here. If you are interested in knowing more about these ICs' functions to understand mobile phone faults? then read Important Tips For Phone Repair. It will explain how these integrated circuits work. You can download the PDF below.
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If you are a mobile business owner, this updated PDF Document also helps you increase your customers. Now Let’s being Integrated Circuits and their problems:
Antenna Points Problem: If any antenna gets disconnected or carbon on their prints, then there will be no network on the mobile phone.
Antenna Switch IC Problem: If the phone Antenna Switch IC has carbon on its prints or is faulty, then there will be no signal on the mobile phone.
Booster IC Problem: If PF (power frequency) or PA (power amplifier) Booster IC is faulty, then you see a weak network signal in the mobile. Sometimes feature phones may be dead by the booster IC. if this IC is short.
VCO IC Problem: If VCO IC gets damaged, there will be no network signal in the feature phone during calls. “Call ended” or “Call failed” message display on a phone screen.
RF IC Problem: If the RF IC of the feature phone gets damaged, then there will be no network signal on the mobile phone
RX filter IC problem: If the RX filter IC gets damaged, the incoming call signal problem appears during calls on the phone.
TX filter IC problem: If the TX filter IC gets damaged, the outgoing calls signal problem appears during calls on the phone. There will be no outgoing calls.
Audio IC problem: If the Audio IC becomes faulty, it disables the Ear Speaker sound and sometimes causes the Mic of a mobile phone to stop working.
Power IC Problem: If Power IC gets damaged due to any capacitor short circuit in the mobile phone PCB, then the mobile phone gets completely dead.
RTC IC Problem: If RTC Real-Time Clock IC gets damaged by any issue in the mobile phone hardware, then there will be no time and date shown on a mobile screen. Sometimes the mobile phone does get switched on.
The Phone Repairs You Probably Shouldn't Try At Home Read Here
Crystal Clock Oscillator IC problem: If Crystal Clock Oscillator gets faulty, the mobile shows a power-on problem when pressing the power button. The phone doesn't get on immediately. There will be a problem with mobile phone network signals during outgoing calls.
Charging IC problem: If the Charging IC gets faulty, the mobile shows a Bad connecting charging message while charging on a mobile screen. Mobile phones get hot while charging. Mobile stops charging.
ROM IC Problem: If the flash IC gets faulty, Mobile phone software gets hung while used. Hang on a specific menu, for example, inbox, camera, etc. Sometimes mobile phone gets completely dead of the software fault in the ROM IC. if you have depth knowledge of how to do mobile software repair then you can do mobile repairing software these phone notes help you out.
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RAM IC problem: If RAM IC Gets faulty then there will be an auto-restart problem on the mobile phone. sometimes mobile display gets hung due to the RAM IC issue.
CPU IC problem: If the CPU IC gets damaged Your mobile phone gets completely dead.
The Most Common Smartphone Repairs You Can Do Yourself Read Here
RAM IC problem: If RAM IC Gets faulty then there will be an auto-restart problem on the mobile phone. sometimes mobile display gets hung due to the RAM IC issue.
CPU IC problem: If the CPU IC gets damaged Your mobile phone gets completely dead.
Software Faults
The faults that come from mobile operating system files (firmware) or downloading an unfamiliar app to your mobile phone software file cause damage are called software faults. If you want to know more about Android firmware, you have to watch the cell phone repair tutorial pdf. For now, I list the common software faults below:
- Not syncing in properly
- App Crashing
- Wi-Fi Signal Connectivity issue
- Freezing / Hanging Problem
- Dead Pixel
- Blank or Graying of Screen
- Contact service Issues
- Overheating
Many times it caused the repairs in mobile phones and smartphones due to both hardware as well as software issues. Sometimes the mobile phone screen or PCB liquid damage and overheating may lead to both types of faults.
If you know how to disassemble and assemble your mobile phone and trace the PCB, repairing, re-soldering, or replacing the damaged part usually resolves hardware issues. If you know how to disassemble and assemble your mobile phone and trace the PCB fault with the use of a multimeter and DC power supply, and change the faulty parts with the help of a hot air station, you can repair your own phone.
If you want to learn how to use a multimeter in mobile repairing read the digital multimeter step-by-step principle and also visit How to use DC Power Supply in Mobile Repairing? page to learn these tools to repair mobile phones. For learning to solder re-soldering visit for learning to solder re-soldering on mobile phone PCB with the Hot Air Station visit the Analog Hot Air Station for Mobile Phone Repairing page.
In some cases of the mobile phone, the user repairs the software faults itself. Normally, software updates, hard resetting, and rebooting procedures help in fixing software issues on your mobile phones. In today's Android phone software, issues are common. You have to know software issues that you can solve by yourself. The problems you can solve without losing your money and time. Road 22 Common Mobile Phone Problems and Solutions updated blog post to know the Android phone software problem list and problems of mobile smartphones that you can solve by yourself.
in this new era, the smartphones are delicate devices, any small fault or malfunction if left un-repaired by you then can lead to other major problems as all internal devices are interconnected and interdependent on each other, which leads to the lower performance of any mobile phone.
You should always follow a reliable cell phone repair pdf for repairing both hardware and software of mobile phones.
Cell Phone Repair PDF
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For people's convenience, all types of mobile repair are done here in repair my mobile lab. You know nowadays people are using their mobile phones and smartphones continuously for communicating and the internet is suffering. That's why the phone gets overheated, especially in summer weather, and our research said people have problems with their phones more than in winter. So that's why I create this article on Mobile repairing notes to provide information before requiring phone repair services and after helping people and mobile phone hardware repair technicians.
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