Secret info
If you know the correct codes, you can access all of the ultra-classified information about your iPhone. Well, it’s not really as classified as it is information you’ll most likely never need to know, but it’s still a pretty cool trick. For instance, if you want to see your phone’s signal strength or SIM card info, just type in *3001#12345#* and hit call.
Give it a try if you don’t believe us, but don’t blame us if all of the information looks like gobbledygook. This is all pretty basic stuff about your phone, so you’re not exactly hacking into the mainframe with this code.