A: 1. The screwdriver should hold the screw. The key to screwing is to hold it, not to screw it
2. Put a plastic bag on the head of the screwdriver and then screw it. It will leave no marks and it works every time.
Q: The lock screen button was broken before, so I went to repair it and replaced a small thing inside. After that, the lock screen button has never felt as good as before.
A: There is a small black gasket on the yellow heat-insulating tape that seals the contact of the power button. It's all because of it. When you repaired it before, the repairman might not have glued it well for you or replaced it with something else. Of course, the feel is not good.
Q: Why is my speaker so quiet? Can you help me analyze it? 4S, it has been dropped and the screen is cracked.
A: The speaker sound is quiet. First clean the external speaker, which is the position of the two metal meshes at the bottom of the phone. It is common to be blocked by dust. If the problem persists, try to replace the speaker assembly.
Q: The wifi is poorly soldered. How to solve it without disassembling the phone?
A: Of course, the WIFI poorly soldered must be disassembled and repaired, and the tin is re-planted.
Q: After the phone fell, others can't hear me when I make a call, but I can hear others talking. Is the transmitter broken?
A: Try using the hands-free. If the other party can hear you talking, then it is a transmitter problem. Replace the tail plug to solve it!
Q: Is the handset broken? The sound is very low and there is noise when making and receiving calls. When I tap the position of the camera on the back with my finger, there is a sound like a loose screw inside. What should I do? It should be out of warranty. How much does it cost to go to Apple customer service for repair? How much does it cost to go to an individual repair shop?
A: There is a spring sound when tapping the back. That is the sound of the reed of the rear camera vibrating. The handset has noise and low sound. Try to remove the dust on the handset net first. Many problems are caused by the handset net being too dirty. If it still doesn't work, replace the handset. After-sales will replace the entire power-on cable. Individual repairs only replace the handset.
Q: The 4S mute button is loose, and there is little resistance when dialing down. The volume minus button will shake when touched lightly, but it does not affect normal use. Is the above situation normal?
A: The screw is just loose. Just disassemble and unscrew it.