Your Guide to Local iPhone Repair Services

The iPhone 6 has been drooped and the front cover glass has broken. The touch function is lost even after replacing a fine LCD screen . What happened to this iPhone 6? Firstly, replace the old screen with a fine LCD screen and test. The touch function cannot be used, which suggests the problem existing on motherboard . Take out motherboard and check, as shown in picture 1-1. 1-1 Secondly, as the touch function is lost, we check the touch circuit directly. Using multimeter to measure the diode data of communication coupled capacitor between touch process chip and touch control chip , finding no problem. The coupled capacitor’s location is shown in picture 1-2. 1-2 When measuring I2C chip bus, find the diode data of TOUCH_I2C_SCL is several tens. The normal one should be over 300 and the clock should be the same as data. Generally, the low diode data is caused by short circuit. The main chip of this signal is only the touch chip. The circuit diagram  of I2C c...

New way to remove iPhone iCloud ID through replace IC, the new Method for Hardware Unlock iphone icloud ID? What should your forget the iCloud ID’s password on iphone 4-5s? how to change old iphone mode to new someone else, and when lost the original purchase certificate and packaging box about your iphone, is it possible to unlock my iPhone through Replace Hardware IC, and get the new iphone mode without iCloud ID. NOTE:  Remove Blacklisted, Lost Mode and Clean Mode iCould For iPhone 4-5s (Pre-Programmed Just Replace to your old Phone and its Ready to use) On the above photo, there are respectively 16GB  NAND Flash ,  baseband  and  eeprom IC  from left to right. Baseband and chip are a whole set, and baseband must work with the IMEI which is stored in chip.   In general, what we need to replace are those three components, Nand Flash, baseband and eeprom IC. However, vipprog iphone eeprom IC programmer have cracked the data read/write of ...

If your iPhone 6 touch screen lost control and opens APP automatically, please believed that you are not alone. Many iPhone 6 users are reporting the lost control of touch screen to us. Now,  vipprog   took a case to show how to solve the problem This iPhone 6 has been repair by others and it replaced the screen assembly, iPhone touch controlchip  and touch process chip. Firstly, power on and enter the system to test, the touch screen still lost control and open each APP automatically. In general, disturbance to touch chip or unstable power supply cause such problems. Use oscilloscope  to measure PN5V7_SAGE, PN5V7_SAGE_AVDDH, PP5V1_GRAPE_VDDH and PP1V8_GRAPE on touch control chip and touch process chip, finding the voltage is stable, as shown in picture 1-1 and 1-2. 1-1 1-2 The real location of touch control chip U2401 and touch process chip U2402 is shown in picture 1-3. 1-3 Measure the diode data between the touch screen socket interfac...

Why click on the iPhone 5 touch screen, the screen did not respond? You suspect that the problem maybe is the touch screen in the first time, but when you replace the new touch screen, the touch function still not working. In this time , you should realized that the problem is not the screen, the essential question maybe is motherboard failure. Use multimeter  to test the diode data of motherboard touch screen  socket, finding no abnormity. The material object of touch screen socket is shown in picture of 1-1. 1-1 Then measure the each power supply circuit of touch control chip U12  (white touch) and touch processing chip U14 (black touch). The voltage of PP1V8_GRAPE and PP5V1_GRAPE_VDDH is normal, as shown in picture 1-2. 1-2 Another measure the power supply circuit of PP5V7_SAGE_AVDDH and PN5V7_SAGE_AVDDN, which is also normal, as shown in picture 1-3. 1-3 The material object of touch control chip and touch processing chip is shown in pictur...

Did you met the iPad Air 2 3G version reboots after being used for a while, and you have no idea what's going on. Don't worry, you can get rid of it, because the Vipprog wrote a solution to this problem Firstly, try to turn on the iPad Air 2.It has no response when pressing the power button  and it can be turned on after inserting USB cable. Enter system and battery percentage is 100%. It shows “ is searching ” when being inserted SIM card  and it turns off when plugging USB cable . Now press the power button and it has no response. According to the trouble phenomenon, there are two problems. One is the USB chip  that must have something wrong. The USB chips of iPhone and iPad have greater chance to be broken. The other is that iPad does not recognize. So we doubt about the 3G part. Then teardown iPad and measure it, as shown in picture 1-1. 1-1 Then, remove the motherboard and measure the diode data of each testing point of USB chip with multimeter , findin...

Have you been met iPhone 6s Plus no displays when turned on, but it asks you to key the password after connecting the computer. In this time, you have no idea what to do? and this has a great impact on your daily life. So , let's see how to resolved it. First, disassemble the iPhone and take out the motherboard , charge it with DC power and turn it on. DC power shows power on current changes normally, but screen displays nothing. Most cases like this are caused by abnormal screen power supply. Then, use multimeter  to measure the diode data of display screen  interface, finding no short circuit or open circuit. Next measure the display power supply, as shown in picture 1-1. Multimeter shows the capacitor C4002 on bootstrap circuit of power supply chip   U4000 is 2v voltage which is lower than 6v voltage when disconnecting display screen. 1-1 Finally, check the U4000, and we found the working condition of U4000 is normal. So we think the dama...

How to Check Mic of A Cell Phone Introduction In cell phones, during a call, when you speak, your voice goes into the mic. A mic converts voice into electrical signal. It is also called microphone and mouthpiece. It will always be at the bottom, inside a cell phone. If it becomes faulty, the person you are talking to will not hear your voice. You can try using an earphone (headset) and try if your voice is being transmitted! The method to check it will be the same for any brand or model of a mobile phone or a tablet be it an iPhone, a Samsung Galaxy.... You can check it with either a digital or an analog multimeter , but most technicains today prefer digital multimeters as analog ones are outdated. This guide will offer you the detailed instructions on how to check mic of a cell phone. Follow the step-by-step repair instructions ， We’ll get your iPhone looking brand new again in no time! All the DIY phone repair parts and tools used in this guide can be found here . Reco...

iPhone 6 has a weak signal and cannot connect to Wi-Fi. Even if connected to Wi-Fi, it cannot surf the Internet. The Wi-Fi chip has been replaced, which IC part should I replace? or how to fix ? After power on and test, signal cannot be searched with Wi-Fi switched on. After teardown the iphone by new  Screwdriver opening tool  Set, we find the connection between the iron sheet and the Wi-Fi antenna is not doing well, as shown in picture 1-24. Wi-Fi signal can be searched with the well connection between the iron sheet and the  Wi-Fi antenna . But the Wi-Fi signal is not stable because customer has already replaced the  Wi-Fi chip . First excluding the problems caused by Wi-Fi chip, we mainly measure Wi-Fi signal reception circuit. After measuring, we know capacitance C5133_RF is short circuit. The location of C5133_RF is shown in picture 1-25 and in material object picture 1-26.   After replacing a new capacitance, turn on iPhone and test. The Wi...