Do you have an iPhone? Perhaps you just bought it. Congrats! You’ve just bought a bag of secrets. You may or may not know your iPhone has its own secret some of which are pretty much amazing and handy.
Each of these codes can be typed into the iPhone’s keyboard and it will accept it. They do a variety of functions. I’m going to explain how you can access these codes and what they can do.
How to use these codes for iPhone
First open your phone’s application, once there type the codes and press ok/call or send in most case.
1. How to upgrade your iPhone
Enter *936# and press call This one is popular, as entering this code will provide you with a text message that lets you know when you’re due for a new phone upgrade.
2. Check your bill balance and Check your minute
Dial *777# and press send This will display on your screen your current bill balance. For chicking minutes dial *646# and press call This code will display your available minutes.
3. Show IMEI
Dial *#06# and it will display no for the call button.
4. Field Test
Dial *3001#12345#*and press call
This is actually the coolest and could be your favorite if you know how to use it. After pressing the call, you’d be granted access to the Field Test app. Aside from the technical info that you’ll see here, you can also enable the ability to display a cellular reception number instead of bars. The number represents how weak or strong your signal is. The higher the number, such as -100, the weaker the signal.
The lower the number, -60, for instance, the better the signal. Even better is the ability of replacing those bars permanently just as I did on my own iPhone. While in the Field Test app, tapping the area in the top left corner of the screen will switch the setting between bars and numbers. Once it’s set to numbers, hold the Sleep/Wake button until the iPhone displays the slide to power off screen. Do not power it off. Instead, hold down the home button until the power off screen disappears. Now you have numbers permanently. To switch back to bars, simply repeat the process, only with bars enabled instead of numbers.
5. Interrogation settings for call forwards
dial *#21# and press call, this will show you whether you have voice, data, fax, sync, async, packet access, and pad access call forwarding enabled or not.
6. Call waiting
For call waiting functions just dial *#43# and press call Tells you whether or not call waiting is enabled.
This are the codes, there are basic yes but at the same time they are pretty powerful any time you’re stuck somewhere use that code. Their power should not be underestimated, nor over estimated.
Note this codes are ATT specific.