Apple Field Test

Here is a nice way to get into the Apple iPhone field test menu. This is where you will figure out the signal strength of your phone.

Dial on your phone                   Press *3001#12345#*

Qualcomm
Rx AGCO signal strength
>-70 = Excellent
  -70 to -85 = Good
  -86 to -100 = Fair
  < -100 = Poor

Intel Chip
looking for rsrp0 mode

>-90 = Excellent
  -90 to -105 = Good
  -106 to -120 = Fair
 < -120 = Poor
 -125 = No Signal