It’s even better knowing that a company built in secret codes that actually have functions. As if the iPhone wasn’t already awesome enough, right?
1. Block Caller ID
Punch in #31# and your phone number, and whoever you call won’t be able to see that you’re the person calling.
2. Get a more precise signal strength.
It’s a longer code requiring a bit more effort, but it gives you a solid number for your signal strength. Dial *3001#12345#* to bring up a list of options. Ignore the options and hold down the power button. When the power screen pops up, press the home button until the home screen reappears. In the top left, you’ll have a number instead of bars or circles. Between -40 and -80 is a strong signal, below that is a bad signal, and if you’re down around -140, you have no signal.
3. Get your phone’s unique IMEI.
Every phone has its own identifying number, just like your car’s VIN. You can find the number in your phone’s settings, or you can just input #06# to bring it right up on your screen.
4. Find out where texts go.
Text messages don’t go directly from your phone to the recipient’s phone. They’re routed wirelessly to a message center by a particular phone number. You can see your carrier’s secret number by punching in *#5005*7672# and then hitting the “call” button.
5. Call Barring.
With call barring, you can block both incoming and outgoing calls. You have to pay for the service, but if you do, you can enable call barring by entering *33*PIN# or disable it by entering #33*PIN#.
6. Call Waiting.
Again, you have to pay for the service, but you can turn call waiting on and off — and figure out whether it’s on or off — with a few codes. Dial *#43# and “call” to find out the status of your call waiting. To turn it on, dial *43# and “call”, and to turn it off, dial #43# and “call.”
7. Call Forwarding
Check to see if you’re forwarding calls, and where you’re forwarding them to, by entering *#21#.