Many friends have problems with their iPhone hardware, but they don't know how to deal with them, such as wifi problems, screen problems, battery problems, etc. If you ask after-sales service for these problems, it will definitely be a big deal. If you ask an individual, you may be ripped off. Now GX editor has compiled a collection of questions and answers from professional iPhone hardware repair engineers with 6 years of experience to answer some common questions, hoping to provide some help and reference for fans:
Q: The home button is not working well. How can I solve it besides disassembling it?
A: You only need to disassemble the phone and clean the electric shock of the HOME button with alcohol. No need to replace it.
Q: My phone has no response when it is turned on and charged. It can only be charged when it is turned off, but it can also be charged when connected to a computer. Exclude the charger and data cable. What's the problem?
A: Replace the tail plug, or use tweezers to clamp a small piece of cotton wool, dip it in anhydrous alcohol and clean the tail plug. I have repaired many such cases.
Q: 4s wireless is easy to break! I heard that the wifi chip is resistant to high temperature and is it normal!
A: They are all the same. When installing the WiFi module, the temperature of the air gun used is about 370 degrees. Therefore, there is no problem of module damage. Usually, it is because of cold soldering because the WiFi module is not sealed with glue.
Q: The signal of 4s is not good after it was dropped. It is in the same room and the same place. It used to be full, but now it is generally only three bars. But it is generally full outdoors. It has been dropped, and then all the other screen frames except the motherboard have been replaced, but the signal is still not good. Can you know what the reason is?
A: For machines that have been dropped more heavily, there may be many fault points. Check whether the antenna next to the battery card holder is installed firmly. Don’t look at the small card that fixes the antenna. It can be used a lot. Usually the repairman is too lazy to install that card.
Q: Let me ask, sometimes I can enter the system when I turn on the machine, and sometimes it stops at the white apple and does not move! System 613, I have re-flashed the system many times and it is still the same. It should be a hardware problem, right? It has been dropped lightly! Thank you!
A: If it is a software problem, it is not easy to judge. If there is a relatively large hardware problem, the flashing will report an error. This is the case with 4S. If it is 5, even a small problem may cause the phone to not boot or report an error.
Q: The 4th generation was dropped. After changing the back cover, the screen was distorted after two days of use. After forced shutdown, it started normally. It happened again after one or half a day of use! I persisted like this for half a month. Now it can't be turned on at all! There is no response when charging.
A: This is a big problem. I have two such scrapped machines. The CPU is connected to the display. I dare not touch the CPU with my skills. There are experts in Shenzhen who can do it, but the success rate is not guaranteed, because the sealing glue of 4S is too hard and difficult to handle. It is easy to fall off. If it falls off, there is nothing you can do.