Idaho iRepair

Yes. Only thing is that it will look even worse than it sounds with a different color home button.

A hard reset will restart your Palm, but you will lose all your settings and data. To do this reset, hold the power button down while pressing in the reset button located on the back of your device with a paper clip. You will then be prompted to press the scroll up button

I have run into this issue before and it only worked with an OEM screen, we tried multiple after market screens and it would fail.

Most likely a bad Audio IC chip, if it is under warranty return it to Apple or your carrier. If it is not you will have to look for someone in your area or online that can perform this repair as it requires micro soldering. iPhone 7 speaker icon greyed out

Sounds like you have a bad Audio IC chip which can be related to the “Loop Disease”. I dont know if Apple has officially said anything on this matter but you can research further iPhone 7 Loop Disease and see what fixes may be out there or if Apple is doing anything as far as replacing devices.

Can you hear yourself if you make a voice recording in voice memos?

RAM is soldered to the board making it basically not serviceable

Boot loop or taking forever to boot after a screen replacement on iPhone 7 or newer can be caused by a defective or incorrectly installed proximity sensor. If the screen came with prox you can remove it and install with the one from the defective screen or send the screen back.

Does it appear that it is actually opening the contacts page but there are just no contacts? Or do you mean an actual only white screen? If it appears there are just no contacts listed, try checking the email accounts on the phone to verify they are not requesting you to sign in again, you can also sync the email accounts again in the settings under accounts. Many people are unaware that contacts can be saved to an email account.

You need to replace the battery. There are companies you can mail in the device for repair such as iMasterRepair or iFixit has a guide and package you can purchase a replacement battery.

Boot loop can be caused by bad proximity sensor, which is moved to the new screen from the old. Or if you got one that came with it, it may be defective.