You know you need it.

Yeah, it’s the secret FIELD TEST menu buried deep inside your Apple iPhone. Once you reach the menu by ‘dialing’ the code *3001#12345#* and then pressing the send button, you find yourself facing the top level menu of the test mode.

The photo to the left is that top “Field Test” menu screen.

Beneath this menu is a series of screens that provide detailed information about the cell site you’re connected to; the cell system; the current call; and lots more.

Go, ahead, enter the digits. Have fun!

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