tmobile us , c6603 de
Using this on tmobile in us, service was in and out flashed the original tmobile baseband, has helped service atleast remain stable, battery was terrible but after some tweaking it helped, flashed older kernel to gain root access with towelroot, then flashed the current kernel back onto phone, after doing that used apps ops to stop google play services from destroying my battery and a few other apps from consistently waking up my phone, , not sure why google search even appears in my battery usage as one of the top things killing it..not sure still looking into that. had a lot of random reboots, come to the conclusion it might have been due to stamina mode, with stamina mode on? reboots atleast every 10-15 minutes randomly , with stamina off? stopped rebooting, also charge phone to 100% and after 10 hrs 24 minutes still on 45%..basically if you want this to work on your phone from another country you will have to put in work -_- and this is for anyone asking about the us tmobile xperia z or the c6606, I used the c6603 de version