Please to remove cover of back of phone. Please to look for at the small red button.
You do not please see red button then please to displace battery from phone. Look at red button in the battery placement compartment.
Please very much to find red button.
If red button is not to be found in unit back with cover extracted but button is white that you find, phone is operational good.
If you are to find button red, then you have released hold of unit into water.
Haven't had any issues with AT&T either 4G LTE, signal loss or anything today. Must be isolated to you guys down south. Least it's not T-Mobile, they are garbage around here.