After more than 15 years covering everything Apple, it’s with a heavy heart we announce that we will no longer be publishing new content on iMore and the iMore forums will be closing as of November 1st, 2024.
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Dial, from the keypad:
*3001#12345#*
Brings up a menu of interesting information, including firmware number, lcd id, cell tower info, gprs data, etc. Kind of neat if you're bored or if you happen to know what it means.