1/29/2008
Secret iPhone Diagnostic Codes
I lied. These codes are really that secret. A quick Google search will return thousands of results, but these codes aren't exactly advertised or listed in the manual.Most cellphones use special "diagnostic codes" - numbers that can be dialed to display various technical information about the unit, the user's account, the cellular network it's "registered" on, or the local network that's currently available. You might have dialed a few of these already while on the phone with tech support.
This is a list of iPhone specific codes. But some of these may work your non-iPhone phone. Some are AT&T or North America specific. The only way to know if they work on your phone is to try.
Feel like dialing some secret iPhone codes? I thought so. Enjoy.
*3001#12345#* and tap Call. Enter Field Mode.
Field mode reveals many of the inner settings of your iPhone, specifically up-to-date network and cell information.
*#06# Displays your IMEI. No need to tap Call.
IMEI is the unique identifier for your cell phone hardware. Together with your SIM information it identifies you to the provider network. It's like a SSN for phones.
*777# and tap Call. Account balance for prepaid iPhone.
*225# and tap Call. Bill Balance. (Postpaid only)
*646# and tap Call. Check minutes. (Postpaid only)
These 3 above are pretty self explanatory.
*#21# and tap Call. Setting interrogation for call forwards.
Discover the settings for your call forwarding. You'll see whether you have voice, data, fax, sms, sync, async, packet access, and pad access call forwarding enabled or disabled.
*#30# and tap Call. Calling line presentation check.
This displays whether you have enabled or disabled the presentation of the calling line, presumably the number of the party placing the call.
*#76# and tap Call. Check whether the connected line presentation is enabled or not.
State whether the connected line presentation is enabled or disabled. Presumably similar to the calling line presentation.
*#43# and tap Call. Determine if call waiting is enabled.
Displays call waiting status for voice, data, fax, sms, sync data, async data, packet access and pad access. Each item is either enabled or disabled.
*#61# and tap Call. Check the number for unanswered calls.
Show the number for voice call forwarding when a call is unanswered. Also show the options for data, fax, sms, sync, async, packet access and pad access.
*#62# and tap Call. Check the number for call forwarding if no service is available.
Just like the previous, except for no-service rather than no-answer situations.
*#67# and tap Call. Check the number for call forwarding when the iPhone is busy.
And again, but for when the iPhone is busy.
*#33# and tap Call. Check for call control bars.
Check all the usual suspects (voice, data, fax, sms, etc) to see whether barring is enabled or disabled for outgoing.
If you are looking for information and detailed instructions on how to use the iPod's Dianogistic mode, then click here.
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8:20 AM
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Jonny
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Jonny
Wow, neat, who spent the time to discover all of this. My daughter would love to read this, I will be sending her a link to your blog now.
My iPhone crashed. i used your directions on how to restart it. thanks. now im trying these iphone codes. neat stuff!
[*] posted by 
: January 30, 2008 7:32 AM
: January 30, 2008 7:32 AMPost a Comment
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