When using WCDMA only mode, some time phone showing H sign and connecting to Data network for 1 or 2 min. But again switch to emergency calls only
On 2G only (EDGE) mod phone work perfectly DATA and Voice calls.
Phone has original IMEI and new KNOX boot loader
I've tried the following tasks : not fixed the issue
Changing stock rom to from 4.2.2 to 4.3 and 4.4.2
Flashing custom roms (Slimkat)
Flashed Modems : ModemXXUEMFK_BMH1, I9505XXUEMKE-MODEM, I9505_ZHUDMH6_MODEM, I9505_DVUBMG1_MODEM, I9505XXUEMK9_MODEM and more...
Please help :