Hi, I'm afraid to tell you that LG V30 will lose waterproof after repaired. We've tried add some waterproof glue on a repaired phone and test whether it could keep the waterproof feature, and it turns out that even you add the glue on it, the waterproof in still not insured. The safe way keep it from water damage is keep it away from water as possible as you can. And official repair would be recommended if your phone is still under warranty. Good luck.

Check whether the volume button stuck in the frame or not. If yes, try opening the back cover and poke the button out, and if you find the volume button can not stay with frame, change a new volume button is needed.

This may be a camera application cache problem. Clear the Camera cache in the settings>Application>camera. Then Clear the whole Application Cache in Settings>Storage and memory>internal memory>(swipe down to) Clear the shared application memory (or smthg like that). If clear the camera cache cannot solve the problem, you can try reconnect the camera flex cable, cause the flex cable maybe loosen when accidentally drop or hit. This Sony Xperia Z3 Teardown can help you disassemble it.

This may be a camera application cache problem. Clear the Camera cache in the settings>Application>camera. Then Clear the whole Application Cache in Settings>Storage and memory>internal memory>(swipe down to) Clear the shared application memory (or smthg like that). If clear the camera cache cannot solve the problem, you can try reconnect the camera flex cable, cause the flex cable maybe loosen when accidentally drop or hit. This Sony Xperia Z3 rear camera repair guide can help you disassemble it.

If you want clear the rear camera dust, you need remove the back cover. The first time the phone is disassembled, it needs some tools and operations. This Sony Xperia Z1 Teardown can help you disassembly the Xperia Z1.

The camera may damaged and got some issue after a long time of using. You can try reconnect the camera flex cable, cause the flex cable maybe loosen when accidentally drop or hit. However, if reconnect the flex cable can not fix the camera problem, then you should change a new camera. This Sony Xperia X Rear Camera Repair Guide and Front Camera Repair Guide can help you replace the camera.

It is possible that you can get the “Unfortunately, Camera has stopped” Error, if you are using the camera for a long period of time. You can use safe mode try to solve this camera problem. - In the safe mode, all third-party apps are disabled so we can detect the problem is with third-party app or other. - Press and hold the Power button - You will see different Power option on your screen - Now press and hold the Power Off option continuously - After few second, you will get a pop-up box asking you to restart the device in Safe Mode - Tap OK - As soon as the device opens in Safe Mode, check whether the camera works or not. If the camera works perfectly fine then third-party app may be causing error in the camera.So, try uninstalling the recently downloaded app and see whether the error is fixed or not. However, if safe mode can not fix the camera problem. then you should change a new rear camera. Here is Sony Xperia Z2 dissasembly. it can help you replace the rear camera.

When some parts of your phone got cracked or deformed, you'll lose the warranty. You can go to OnePlus support center and you need to pay for it. If you want to repair you OP 5 by yourself, you can watch video about this and see whether you can handle it. You need some tools to remove the battery cover and pop out the camera glass from the inside. And then replace for a new camera glass.

1. If you don't turn it off and clean the water in time, maybe the signal cable has been water damaged. 2. Remove the signal cable and reinstall it, test whether it is normal or not. 3. You can tear it down and check whether the signal cable is loosen or not. 4. If the methods above can’t fix the signal problem, then you should turn to the hardware solution: change a new signal cable. We have provided how to replace the Moto G5s Plus signal cable repair guide for you.

Your z3 compact screen maybe damaged by dropped, i suggest you try to disassemble your z3 compact then reconnect the screen flex cable. see if the screen problem is cause by the screen flex cable loosen. If flex cable reconnection can not fix the screen problem, then you should turn to the hardware solution: change a new screen.