After having a closer look in the phone settings-connections-mobile networks I found out the setting for choosing GSM and/or GSM/3G is missing...which forced me to realize I used a menu icons originally made for k790i which doesn't support 3G. So after flashing a different pack of menu icons, finally made for k800i, I didn't get that message again and everything worked fine since then.
Sorry....my fault:o
Just for the others who don't have enough experience working/flashing menu icons (like me), before u do that just check out first if all of the menu icons are supposed to have the functions they're ''prescribed'' for...
Thanks for now;)





