How to safely activate LTE on S4 mini (GT-i9195) running 4.2.2? I'd like to activate LTE on my device: S4 mini with LTE (GT-i9195). There seems to be ways of doing this, but they seem rather "scary" and experimental at best:


http://www.androidauthority.com/community/threads/how-to-activate-4g-lte.16160/
Do you know other Android keypad commands (dialer codes)?
http://forum.xda-developers.com/showthread.php?t=2734094


Is there are a better or "official" way of activating LTE on this device??
Call the Service Menu : with *#0011# and then hit (menu) Back and then (menu) Key Input and enter Q0000 and wait.

Select UMTS -> Debug Screen -> Phone Control -> Network Control -> Band Selection -> Automatic Done.

May be restart the phone.