from MakeUseOf.com by Grant
Your iPhone can play games, browse the internet, watch YouTube videos and more but there are also some nifty tricks you can use to find out some neat information about your phone.
Basically, there are a bunch of iPhone keypad codes that you can type in and get back certain information about the your mobile carrier, phone and billing details.
To use any one of these codes, open your iPhone’s “phone app” and make sure that the keypad button is selected in the bottom menu. Then, type in the code from the list below and press call.
iPhone Codes: Network & Phone Information
*3001#12345#*- Opens up the “Field Test” settings on your iPhone, which allows you to see many, many advanced network settings on your phone including cell site information and more.
*#06# – Displays your iPhone’s International Mobile Equipment Identity (IMEI) number (this code also works on many other phones).
*#21# – Displays any call forwarding settings enabled on your iPhone.
*#43# – Shows you if call waiting for various parts of your phone are either enabled or disabled.
*#30# – Shows you if you have the call presentation (to see who is calling you) setting enabled or disabled.
*#33# – Displays call barring settings for your iPhone, and weather they are enabled or disabled.
iPhone Codes: Carrier & Billing Information
*646# -View available minutes on your AT&T plan (*min#).
*777#- View available minutes on your AT&T pre-paid plan (if you get the “Account Not Found” error, you do not have a pre-paid account and you should try the code just above this one for postpaid accounts).
*3282# - View wireless data usage statistics (also *data#).
*225# – Check the bill balance on your AT&T account (also *bll#).
*729 – Makes a call to AT&T to pay your wireless bill.