[viet1919]

I am wondering how many water sensors are on the Samsung Galaxy S4? I am aware of 4 locations. One on the battery. Another on the inside bottom right corner behind the place of the battery. And 2 behind the white plastic part covering the motherboard and such. I am sorry if I am not making any sense. Anyways, I am sending my phone into T-Mobile for inspection. They say that if my phone has been water damaged I will have to pay a fee. I know for sure my phone hasn't been in contact with water, but I've read online that moisture or some sort of that nature can trigger sensors in your phone without you knowing.

ALL IN ALL,

Where are the water sensors in the Samsung Galaxy S4?
And how does the T-Mobile Phone Inspection work? Does anyone know? What do they do exactly? I know they inspect the phone for damage, but do they dissect it and such?