Chosen Solution
a week ago i updated ios 10.3.3 after that wifi and blueooth didnt find anything but interestingly my wifi adress and bluetooth adress is ok . i changed all of antennas but nothing changed. also carrier doesnt work regularly . what can i do ?? i also did freezer trick ( doesnt work )
Update (08/22/2017) also hotspot has a problem
Do you have another housing to try? Put the Logic board in another housing to see if that helps?
Did you try restarting the phone, that might work