I just recently replaced the usb charging port. I plugged the phone in and it tells me the battery percent. phone is not responsive to and buttons. tried the power for 10seconds, vol up and power for 15 sec and vol up/down for 2 min still nothing.
Did you replace it yourself ? If so are you sure you have all the ribbons are on good and tight. Maybe the vol/power buttons got misaligned when putting it back together. Has to be something simple if they worked before