Aug 06, 2014

If you wiped your BlackBerry, or if you tried to root the device and you now need to reload the operating system, you can reinstall the OS using the same application you use to sync your data. The How to reload the OS on a BlackBerry Z10 or BlackBerry Q10 May 03, 2013 BlackBerry 10 Autoloaders - BlackBerry Developer

In the event that this has occurred, please review KB33480 – Reloaded a BlackBerry 10 smartphone after an interrupted security wipe for information on how to recover your BlackBerry Z10 smartphone. To learn about a feature on your BlackBerry 10 smartphone or troubleshoot an issue, there are several great options available to help.

The Z10 uses the OS 10.2. operating system, different from earlier Blackberry phones, and so, can be fully functional on a network like that of Consumer Cellular - as my two are. However, not all Z10s are the same even if they are the same model and advertised as "unlocked". BlackBerry Z10 Smartphone - AT&T Apr 17, 2013

How to restore your BlackBerry Z10 when it won't turn on

Mobile terms glossary GSM stands for Global System for Mobile Communication and is the most popular 2G mobile phone standard in the world. GSM is used by about 80% of all mobile phones - approximately 2 billion people across more than 212 countries. The widespread use of the GSM standard has made it easy for most mobile phone users to use their phones overseas thanks to roaming agreements