MobileRepairingOnline

Teaching Samsung,iPhone, and Smartphones repairing courses online Published many free Books on Repairing of Cell phones, Android phones, Apple iPhone,ipad and others.Get trained today for build your career in android smartphones and tablets repairing contact: +92-312-2906096 email mobilerepairingonline@gmail.com


Search This Blog

Smartphone and Printed Circuit Board Repairs: A Complete PDF Guide for Beginners and Professionals

17 Feb 2018
download PDF manual
free explanation notes
Smartphone and Printed Circuit Board Repairs is a three blog post complete PDF manual that answers all the basic and professional level questions for entrants into Smartphone computing devices technical support segment. The PDF solutions takes the reader one step at a time, combining a strong theoretical & practically knowledge base about Smartphone Circuits - how they function, description of their internal components, their internal electronics with video tutorials on basic foundation of Smartphone Circuit electronics for repairs and merged it with descriptive easily practicable tutorials on hardware related repair procedures for Smartphones.
If there is any complete PDF manual on Smartphone Circuit repairs ever known, then this PDF repairs is the complete Smartphone short circuit board repair guide for Beginners and Professionals mobile technicians! This PDF notes is for the young people, students, or anyone seeking a good resource for practical learning towards self-reliance. Through the pages of this PDF explanation, a reader would train to become a great Smartphone technician with a brighter and faster-earning potential than most laptop technicians. The video tutorials cover How to check short circuit, troubleshoot Shorting, Reasons for Shorting in Smartphone Motherboards and also Procedure To Remove Shortage in mobile circuits and many more.
Discover the secrets of Step by Step phone repair with this PDF manual free download today!

Editorial Reviews About the Author

muhammad asif azeemi
phone repair courses
Muhammad Asif Azeemi has set up and managed two regional mobile phone repairing and training centers within the last twelve years; taught and mentored over seven thousand students, mobile phone, and computer service full professionals. NGOs and individually over the past three years. He holds a diploma in Mobile Repairing Course in 2003 with Computer Universe Institute Affiliated with Sindh Board of Technical Education (SBTE), Certified in Basic Electronics & Wireless Communication Course. He also holds multiple industry standard certifications like Samsung Smartphones and Apple iPhones. He consults in mobile software and Communication Technology, a training consultant who has mentored a good number of individuals who run successful mobile and smartphone repair businesses.
Muhammad Asif Azeemi personally teaches online seminars nationwide in Nigeria and some African countries covering Mobile Phone and Smartphone Repairs, including troubleshooting, maintenance, repairs, and upgrade. His classes are never boring as he has a knack for making complex topics both understandable and entertaining. If you have 6 or more people to train,  Asif Azeemi can design and present a custom cell phone repair seminar for you or your organization’s needs. Contact Asif through email: mobilerepairingonline@gmail.com or http://phonerepairingsolutions.com
Read more ...

Learn step by step iPhone Repair Shops Book PDF + Video Downloading

10 Feb 2018
Mobile repairing online institute provides iPhone step by step repair shops training through a book pdf!
I think you 'll agree with me when I say:
it's really hard for a person who doesn't make enough money to live on their own and support their family pay bills, pay rent and survive to live comfortably or have a trade cell phone repair school in their vicinity or for a students who do not have the time to attend classes in mobile phone repair institute.
in today's blog post I am going to share the best information with you that how those peoples can easily learn free of cost by The iPhone step by step repair shops books pdf written by Muhammad Asif Azeemi has simplified iPhone repair to a great extent. It is written bearing in mind ease and simplicity so that it is just a cakewalk to learn and take up smartphone repairs as a career.

Now Student Can Download iPhone Repair Shops Book PDF Free

learn cell phone repair by books
Download & Review Free today

This is one of the best books pdf available to learn step by step iPhone repairs. It explains iPhone repair shops techniques pdf better than a regular guide or a service manual. The package comes along with a video downloading. All the theory lessons are explained in the book pdf while the practical lessons are explained in the advanced video tutorials. This pdf book is suitable for not only professionals and hobbyists but also novices who do not even have basic knowledge of electronics and electrical. Dropouts and even those who have not attended any regular college of electronics will find it easy to understand.Download your iPhone book PDF free copy here.
That's not all.

iPhone and Samsung Practicable Training Material on a Cheap Cost that Student Can Pay

iPhone & Samsung repair video
paid course

At mobile repairing online institute, we aim to simplify technical studies, so we have prepared the training material in such a manner that it is easily understandable and practicable. After completing the study material, you should be able to repair all types of Samsung Galaxy phones and tablets including Apple iPhones.
With the help of the pdf book and video download, you will learn:
Tools needed for iPhone repair shops
Dismantling of iPhones
Step by step study of parts inside an iPhone
Study of iPhone motherboard and its components
Study of iPhone and Samsung ICs(chips)
Using a latest digital multimeter
Step by step Testing of iPhone parts with a multimeter
Soldering and desoldering with latest
Liquid damage smartphone repair
Tips and tricks for argent repair jobs
Flowchart procedure for troubleshooting of faults.
And much more!

This iPhone and Samsung Solutions Video Course are suitable for:
Aspiring technicians
Do-it-yourselfers
Computer and Mobile Technicians who wish to further their knowledge
Mobile Repair Business owners so that they can supervise their technicians

Package Contents:
40 video lessons
you can view videos training or able to download them, See your lesson! And if any question about the lesson you make write and email us we answer your question by email reply you soon as we can:
We ship the package worldwide. You should receive the package within 1 working days after the payment.
Read more ...

iPhone Logic Board Repair Schematics Free Download

3 Feb 2018
iPhone schematics download
iPhone schematics diagram,
Schematics are essential for Apple iPhone logic board repair.  Unfortunately, they’re also illegal to own Apple product Schematic.  They’re considered the proprietary property of the smartphone companies that they belong to.  In this case, Apple and Samsung.  I remember back in the days when schematics service manual and diagram PCB layouts were widely available for pretty much everything.  These days, you’d be hard-pressed to find free schematics for some hardware that you own in this modern era.  How do you fix these things without schematics and pdf diagram?  Well, it’s hard.  One way would be to use a known good part from a known good logic board of the exact same specifications, then compare the readings to the bad part of the logic board.  The problem with doing this is that it’s very time to consume and more expensive since you would have to buy donor boards for every piece of iDevice that you’re repairing.  With schematics, troubleshooting is a lot easier.

Although schematics are illegal to sell and distribute, there is the way to obtain these schematics online.  You just have to look.  Here are some ideas on where to get schematics for most iPhones.

Here you will find all iPhone Schematic factory download for educational purposes. Apple Logic Board Schematic PDF Manual Free Download (freely downloadable schematics)

Free iPhone Schematics Diagram Download pdf for all Apple iPhone All Models Schematics & Manual Service Downloading Links For Smartphone Technician
Read more ...

iPhone Deals Basic Repair Tutorial Solutions

17 Jan 2018
replacing iPhone feature
future iPhone
As irepair tech outstanding Muhammad Asif Azeemi has said: A iPhone that is vibrating with no display when powered by outsourcing this fault is a nonfunctional LCD display.
iPhone accepted  "power supply " but show vibration or sound
If your Apple iPhone shows no display (no backlight, no image when you try to charge its battery), and does not seem to be working when you insert charger show USB icon on LCD. When connected to an outscore power supply then iPhone endlessly repeats twin vibrations in 'silent' position.

When iPhone backlight Circuit or IC Failed

In iPhone circuit, You may have a backlight filter components(like a fuse). (This can easily happen when using certain replacement LCD that have an exposed backlight flex solder joint pins—pressing the digitizer into the frame will cause the exposed pins joints to short the LCD power line to ground and burn the filter and its components.) This can also be fixed as a board-level repair.

Software Problem in iPhones

If your iPhone has never been opened, the issue could be a simple iso software crash. Perform a force restart resolves it.

When LCD Cable(s) Disconnected

Your iPhone screen's flex cable connectors may have popped free after a drop. to fix your iPhone's screen check each connection and re-seat it if necessary.

When LCD Panel Cable(s) Damaged

Check LCD flex cables—in particular, the display's flex.  carefully Inspect cables for damage. replacing the LCD panel can solve the problem.

When LCD Cable Connector Sockets Damaged

There may be damage to the Screen digitizer flex cable socket on iPhone Circuit board. Check the digitizer sockets for debris, bent connector pins, and remedy the problem. If the socket connector or some pins is damaged, an advanced smartphone repair course skilled technician can replace it with a board-level repairing.

I tell you the method to repair iPhone 6 PCB step by step  with Block Diagram to know ICs in iPhone 6 is the same for iPhone 6 plus you must visit my previous article

Section iPhone Repair Knowledge

1, fault classification
1, caused the causes of iPhone
(1), the menu settings failure: failure is not, strictly speaking, if no calls are perhaps for the owner to set up call forwarding; play no iPhone is set up outbound throttling. The baffling problem, first with total reset.

(2), using failure: improper operation generally refers to the user, dislocation caused by adjustment. More common are the following categories:

1), mechanical damage. As the operation or method of application of excessive force is not correct, resulting in apple devices rupture, deformation, and the module pin loose weld failures and other causes. In addition, flip off axis, the antenna was broken and thrown split casing, water, broken screen, also belong to this type of failure.

2) improper use. When using the phone's keypad keys with the nail tip will cause the keyboard touch bare ground or even fall off; with bad iPhone charger will damage the internal charging circuit; even cause the accident; on the phone menu for illegal operation of certain functionality is turned off, the iPhone is not working; error led to SIM card password locked, the blind try to create self-locking SIM card protection.

3) improper maintenance. Apple iPhones are very sophisticated high-tech electronic products, use should be noted that in the dry, the temperature suitable for the use and storage environment.

4), the quality of failure. Some parallel imports of previous iPhones are through consolidation, converted, quality underground. Although some mobile phones are digital phones but do not meet the smartphone standard, cannot be used.

Fault Classification in iPhone

(1) does not dismantle the iPhone only to see its appearance from the mobile phone failure, can be divided into three categories:
1) The first one is not working, including the power supply can not turn connected to the phone and press the power switch without any reaction;
2) The second is not completely boot, press the iPhone to switch current can be detected, but no switch machine normal reminder: if key lighting, display lights all bright, display, character information display with ringer After the start tone adopted by such self-test;
3) The third is to boot, but the failure of some functions, such as the buttons do not show unusual, silent, do not send it.

The next part of this article will be published very soon. Keep visiting my blog for next post.

Read more ...

Learn to Repair Smartphone Printed Circuit Board Step by Step part two

6 Jan 2018
As I told you in my previous article the PCB printed circuit board cannot be repaired in two situations
  1. when it burns
  2. and second When It Breaks

when it breaks the copper wire gets disturbed otherwise,
printed circuit board
copper wire inside

in the burn case,
mobile circuit
burns

we see that how much it burns if it burns too much then you cannot repair it.and if it burns just little more then you will try to fix it.

Q: How Can It Be Fixed?

A: we will know it by using the meter!
digital meters
multimeters

you will have to keep the multimeter on continuity if the phone is short it will give reading from both sides on the battery connector of the phone.
multi meter leads
battery connector of the phone

and if the phone is not short that you will not get reading on multimeter form the battery connector on the phone.as I told you the meter should be in continuity and if you are using the digital meter then put it on continuity buzzer.
meter position
digital meter continuity buzzer

placed the black lead from the meter on the positive side of battery connector and red lead on the negative side if reading shows
mobile short reading
same reading both side

by the opposite banking then it means there is a shortage in the circuit remember one thing! all the reading shows the amount of burning area in the circuit for example if the opposite shows
opposite side reading
previous reading

it means the phone is 35% short or burn Similarly if opposite shows more than

it means the phone has been burn more than the previous reading if reading is zero from battery connector both sides then phone circuit cannot be repaired ever.

I tell you the method to repair any mobile phone PCB step by step to know what is smartphone circuit board prints you must visit my previous article

Mobile Phone Hardware Repairing ( about faults comes with IC ) part two

LCD Light Control IC
LCD Light Control IC
ic position

LCD Light control IC Power Amp This is a very important IC for Transmitting signal (Tx) in your phone. This IC is work as a Tx amplifier and it gets high voltage directly from the battery.When it is damaged we can see following faults.

Signal Drop

No Network or Access

Battery low quickly

Cant make a call ( Tx does not work properly )

Power on failure

I published an article about faults comes with phone ICs if you don't read it click here

Find and Download free mobile phone circuit diagram pdf Online


iPhone, Blackberry, Htc, Samsung, Nokia, Sony Xperia, Motorola, LG, China, Qmobile, Huawei

Learn how to read it. At first, you might think that it is hard to do so, You are not going to be experts and master in smartphone repair as long as you don't know how to read it. Many of mobile phone repairman exist nowadays that do not have any knowledge about reading it. They always rely on finding free solutions over the internet and forums. Those people who give free solutions are those people who know how to read a schematic diagram. Now here's your chance to learn and do not rely on others, and be an expert and master troubleshooter when it comes to hardware problems.


Read more ...

Block Diagram iPhone 6 Mobile Repair Step by Step for USB Circuit

31 Dec 2017
The data exchange system consists of:
CPU: UPP
Pmu: Integrated Nutrition
IC USB: Portal for communication between devices and processor

The U2 IC Scan Method:

It's also called the U2. The examination is being tested.
The reluctance of the iPhone 6 to be considered at the USB freight entrance points is not enough, but the poles should be changed every time on the test points until the diagnosis is correct.
Block Diagram iPhone 6 Mobile Repair
for USB Circuit

What can be deduced that ourselves on the Examination on one side:

- Black on the ground and red on the test point.what is infinite on the one hand does not mean that there is value in the opposite way, it may be infinity or very high value, and therefore a break in USB communication and you will not be able to detect it by limiting the examination on one
- Black on the point and red on the ground.
The value, on the one hand, does not mean that there is no end in the opposite direction because there may be damage in likes (the or the) or a diversion in an integrated course via Non-Polar Capacitors.
USB integrated circuit
way value data 

What can be deduced if the test is properly tested:


It is the same method of testing the iPhone 6 IC power on the battery contact points
And the same way the iPhone 6 sim is checked on the chip points.
And the same way the SD card is checked on the external memory points.
The reversal of poles is necessary to obtain results and conclusions that bring us closer to the right diagnosis.

First, let us agree that the values that appear to be sound and if we reverse the poles do not necessarily indicate the validity of the integrated, but it confirms the validity of the track (there is no leakage or short of the protection elements on this path).
The improper values are definitely indicated in the course or in the elements of protection or in integrated (the).

What can be caused by Damage: U2 IC USB

u2 ic diagram
iPhone 6 repair
not taking off the device.
interruption.
slow shipping.
fake shipping.
Rapid Battery discharge.
you don't know the computer on the computer.
steady on the Itunes sign...

What is the Alternative:

IC USB iPhone 6 is the same for iPhone 6 plus

Note: scan is after the iPhone 6 battery has been removed so that the measurement results are accurate Because if there is damage to one of the logical gates or valves, it will directly affect the conductors.For the tool that measures the effort and the current choose, the idea is not different only the test we mentioned determines resistance or resistance the last to set the amp and the volts

Apple iPhone Repair Service Manual Free Book

Tips tricks and news update Trends about Apple iPhone 8 and iPhone 6 Plus please explore Apple iPhone Repair book for Apple Devices problems practical solutions the example step by step articles can teach you to diagnose troubleshooting and repair any iPhone circuit and its electronic components.click here to read and download Apple iPhone Repair Service Manual Free book
Read more ...

Learn Smartphone Printed Circuit Board Step by Step with Mobile Repairing Online in 2018

26 Dec 2017
Actually, circuit and boards usually are made up of fiber. it can be also said two kinds glass and plastic. the smartphone circuit consists of plastic fiber. fiber is a good electric conductor that current never Burn It
the smartphone circuit
plastic fiber

you can see the picture the smartphone has green circuit is the copper wire is placed in the mid it cannot be seen but it exists you can see the LCD Jack so this is copper layer the fiberboard that consists on copper print
copper layer
copper print



What is Copper Print on Latest Smartphones?


you can see this speaker which is attached to this point. This is print, the point of the wire is attached here and another point is punched by the machine when it becomes Golden in color and placed with any ICs or apart so when you put the battery inside the smartphone different ICS get active for working

whats speaker IC do to it actually create flow of current sense to the parts and then this print to spend in the fault diagnosing process is the reverse action that is first we check the print and we see the component then IC so the print reflects every part of the phone this is called PCB mains printed circuit board PCB exists on every smartphone .

fault diagnosing process
Golden in color

this printed circuit board cannot be repaired in two situations. I will tell you both two methods to repair any smartphone PCB step by step in my next article so keep visiting my blog

Mobile Phone Hardware Repairing ( about faults comes with IC )

We can divide all Mobile phone damages into Hardware, Software and Settings faults. when we think about hardware damages or faults mainly we want to know what are the smartphone main ICs and faults comes with IC. Old phones had ICs more than latest phones. However when you get complete idea about that ICs then you will be able to find the solution for damages in your phone properly.Check following list of ICs and try to understand about that faults.

Power Amp

Antenna Switch

RF Processor (Hagar IC)

Power IC

CPU

Charging IC

Flash IC ( ROM or EEPROM)

Oscillator (VCO)

SIM IC

Key Pad IC

Antenna Switch IC


Antenna switch helps to filter frequency Bands
Some Frequency band are not worked properly

The phone will heat Antenna Switch, Antenna switch helps to filter frequency Bands as 900Mhz, 1800Mhz and connect Rx, Tx( Receiver and Transmitter). Therefore when damage this IC we can see faults as following.

Signal Drop

No Network found

Some Frequency band are not worked properly RF Processor ( Hagar IC)

The next part of this article will be published very soon. Keep visiting my blog for next post.




Read more ...

Mobile Phone iPhone and Smartphone Troubleshooting Upcoming 2018

20 Dec 2017
iPhone and Smartphone Troubleshooting Upcoming 2018
damage smartphone maintenance
Is about learning some basic concepts of smartphone and having some knowledge about troubleshooting those phone devices.For having some basic knowledge of phone devices, I took help from an expert who repairs the mobile phone. I also gained some knowledge about how to use the basic devices like hot air station, power supply, Multimeter etc which are frequently used for Phone Troubleshooting.

Damage Smartphone Failure Maintenance Knowledge

Open the smartphone, with a few core terms of its failure, also can be divided into three categories:
1) The first part of the supply charge and power failures;
2) The second for the smartphone software fault;
3) The third part of the fault for the phone transceiver.Between the three types of failure was inextricably linked,For example: impact of smartphone software, power supply systems, send and receive path phase-locked loop circuit, the transmit power level control, send and receive time-synchronous control channel,and send and receive access to reference crystal oscillator has to provide software for smartphone running the clock signal.

Increase Smartphone Maintenance Efficiency by Finding out Basic Electronic Components Failure


Following more useful Assignment: In the daily smartphone maintenance, to understand what factors lead to damage to the role? To understand the damage factors, should we do?Second, the failure characteristics of common basic electronic components whether the breakdown of natural wear and tear or damage arising from man-made failures, generally attributed to the circuit contacts open, damage to basic electronic components and software failures of three failures. Contacts open, if it is a broken wire, disconnect the plug aside, poor contact, etc., generally easier to repair them. Damage electronic components, (except obviously burned and fever), often difficult with observers found that in many cases, have to rely on instruments to detect judge, so the maintenance staff, the first essential to understand the various devices effectiveness of the characteristics of this smartphone circuit fault for the maintenance, increase maintenance efficiency is extremely important, the following gives some common characteristics of effective electronic components.
Read more ...

How to Check Polar Capacitor in Smartphone Circuit

7 Dec 2017
All smartphone non polar and polar Capacitor finding and Checking method are same.you can use Digital and Analog Multimeter both to Check Capacitors in smartphone motherboards.

The Tantalum Polarized Capacitor

Tantalum polar capacitors are used in latest smartphone circuits. Tantalum Polarized Capacitors are typically used in large voltage mobile phone situations, such as Direct Current line filtering to reduce noise related to uneven DC voltage levels. Mainly value measured in microfarads. Polarity is critical to mobile devices.
Polar Capacitor Checking method is listed below with Digital Multimeter. Set Digital multi-meter on CONTINUITY Scenior1: Connect Black probe to Capacitor +VE print. and Red probe to Polar Capacitor -VE print shows some reading.


Note: Check Polar Capacitor with a Digital multimeter on Buzzer Mode. If it is good then the Digital multimeter will NOT give any Beep or Buzz sound. If there is the buzzer sound on Digital multimeter form both +VE and -VE side then the polar capacitor is faulty. Replace it with a new one.

Why Polarized Capacitor Short Lead

Polar capacitors can have an internal shorted terminals, excessive leakage, and degradation of capacitance meter. short the terminal capacitor to discharge it prior to testing.
for more free smartphone video tutorials in English and Urdu language go to my youtube channel visit now mobile repairing online
Read more ...

Learning the maintenance of phone starting from zero

28 Nov 2017
Learning the maintenance of phone starting from zero. Join best mobile repair course online school for a detailed 7-day training that will teach you beginner intermediate advanced expert mobile and tablet repairs.
Complete all cell phone repair short courses via Skype software with the Internet. Also, a copy of the courses will be sent to you via Gdrive attachment.
Learn to repair your mobile phone through simple learning level 1 level 2 and level 3 courses,
With online video tutorial for smartphone repairing, we will discover the depths of the cell phone, as well as the tools, equipment needed in the repair of mobile phone circuits, and the pieces that make up the mobile circuits and how to measure all the electronic pieces in phones housing and circuit to solve all the failures, damages.



Muhammad Asif is an author, a cell phone repair engineer, and a trainer. He loves cell phone technology and enjoys sharing with others what he has learned from the past experience, he has authored more than a dozen blog posts including books such as the Common Mobile Phone Problems and Solutions and Samsung Galaxy S6 problems & their solutions, and videos such as the what is mobile phone diagrams? Tutorial Complete Video Course. In addition, he has taught many cell phone courses including beginner intermediate advanced smartphone repairing pieces of training to more than 4,000 students, both in the classroom and via Skype software with the Internet. He runs a support website for all of his products at phonerepairingsolutions.com



Read more ...