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iPhone-GSM codes for supplementary services and information
By | August 11, 2008
GSM codes for supplementary services / information
Here are some sites that list some more of these codes:
· Codes to be used with GSM phones.
· GSM codes.
· GSM feature codes.
· GSM features that aren’t widely known.
· iPhone Dev Wiki - Phone codes
· More secret iPhone codes.
Since the iPhone is a GSM phone, you potentially have access to numerous codes that can be entered on your phone’s keypad to either give you information about your phone (like your IMEI) or to activate or deactivate features (like call forwarding, barring and SMS delivery reports to name a few).
Here’s a sample of some of the codes you can try.
*#06# - Displays your International Mobile Equipment Identity (or IMEI for short). The IMEI number is used by the GSM network to identify valid devices and therefore can be used to stop a stolen phone from accessing the network.
*#21# and press Call. Settings for call forwarding for calls, data, fax and sms.
*#30# and press Call. Calling line presentation check.
*31# (followed by the number you are dialing) - Sets outgoing “Caller ID” to be private.
#31# (followed by the number you are dialing) - Sets outgoing “Caller ID” to be visible.
*#31# (followed by the number you are dialing) - Displays current setting of outgoing “Caller ID”. (Disabled = visible, Enabled = private).
*#33# and press Call. Check for call all barring.
*#43# and press Call. Determine if call waiting is enabled.
*#61# and press Call. Check the number for unanswered calls. Shows the number for voice call forwarding when a call is unanswered. Also shows the options for data, fax, sms, sync, async, packet access and pad access.
*#76# and press Call. Check whether the connected line presentation is enabled or not.
*225# and press Call. Bill balance for postpaid accounts only.
*646# and press Call. Check the minutes for a postpaid account only.
*777# and press Call. Check the account balance for a prepaid iPhone.
Field Test menu
The Field Test menu is used to view various engineering parameters, such as signal strength, frequency band, tower ID, et cetera. This is a menu that lets you look at the inner workings of the iPhone from a telephone technician’s view. The great majority of iPhone users will never need access to this menu.
You get to this menu by entering *3001#12345#* and press Call.
To exit the Field Test menu push the home button. For a detailed look at the various menu screens on the iPhone check out this article.
If you’d like to learn how to add this icon to your SpringBoard which will automatically launch this application, stay tuned for a tutorial on adding extra icons.
For more information about the technical side of this menu check out this site & this site.
The SIM card
Unsure if your iPhone SIM will work in phone X or if SIM Y will work in your iPhone? There is a very detailed thread (with pictures even) over at Howard Forums where this is spelled out pretty clearly.
This graphic is from Apple’s user’s manual. I find the best way to remove the SIM is to use a push pin to pop the tray out just a little bit (it won’t come out very far) and then hook the inside of the hole (or just angle the push pin inside the hole) and
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