Let's try to get a list of the USSD/MMI codes our phones support.
For example, I was pleasantly surprised with
*#06#
When you enter this in your dialer it will present most of the information from the sticker we have on the back of our phones. This code is kind of universal and works on majority of devices. I am more interested in discovering Pro1 specific ones, though :)
*#*#0000#*#* - Hardware information (like platform model, IMEI, etc.)
*#*#4636#*#* - Brings an extensive testing application that gives lots of info about networking and app usage
*#*#2432546#*#* (*#*#check