First this is only a guide not a repost
1. Use ssu.apk to unlock it first
2.use cf auto root to it
3 use adb:
am broadcast -a android.provider.Telephony.SECRET_CODE -d android_secret_code://27663368378
UMTS -> DEBUG SCREE...
This is not my work.. it is by Spirit81
just flash it with recovery...on your rooted S4
if you are using 3minit framework
you can flash this file and choose bar battery...
I got 10mb
Well retested with full bars
I tried this on my SPH L720T on stock touchwiz and mk5 modem and it worked great. I then flashed back to cm 12 because I did not need service on that device at the moment. I recently burnt out the logic board (stupid charging experiment) on my A...
yea pop the sim and go i found this method when i was nae frimware and baseband and kept updating it went NG2 and lost the unlock for some reason so I tried so this i seen for the note 3/l720t and it worked