Categories / Phones
Suggested by: GreyAi, 15 Oct 2009 | Print version
A hidden Field Test Mode screen is available to view in most models of the Apple iPhone.
1. Enter Phone Mode
2. Now dial *3001#12345#* and then press CALL
3. The field test screen will now show
4. Select Cell Information
The top line displays info from the phone tower you are using.
The lines below show details on any nearby towers.
Signal Strength is on the top line after RX-.
What the iPhone field test mode numbers actually mean:
Signal strength shows a number from -50 to -105 (or may be as a positive number). Closer to zero means a stronger signal, i.e. - 50 (roughly full signal) is better than -105 (roughly no signal).
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