A:AnswerAlthough I do not have that phone, it should technically work, most wireless chargers are generic and can charge any phone that has wireless charging capabilities. You might go to your local Best Buy, they usually have demo models you can test with.
A:AnswerYes, that should work. Doesn't matter if charging port is loose, that's not part of how it charges wirelessly. Just an antenna inside the phone.
A:AnswerYes and no. The device will stop charging your phone when it complete and turn off the coil that charges the phone, but the device will always be turned on, there is a little light that tells if the device is charging (red light) or finished (green light).