#6 Whats the meaning of these numbers?
These numbers are typically expressed as a negative number, If you see numbers between -40 and -80 the signal is strong. Anything below that is a bad signal, and if you're down around -140, you have no signal.
#5 Get the exact identity of your phone.
Your iPhone have a unique IMEI number. You can obtain your IMEI number by typing *#06# at your keypad and it will show you a 15 string of numbers right up on your screen. That number represents your iPhone IMEI and only unique to your iPhone.
So, if you lose your iphone, misplaced it or get stolen, you can use this number to track your iphone even if it is switched off. Record it and keep it somewhere safe.
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