g615f Patch Certificate but emergency calls only

Operation: Patch Certificate
Selected model: SM-G615F
Software version: 37.0

Waiting ADB device... OK
Reading phone info...
Model: SM-G615F
Android version: 8.1.0
PDA version: G615FXXU2BSB1
CSC version: G615FODD2BSB1
Phone version: G615FXXU2BSB1
Product code: SM-G615FZDDSLK
CSC country code: Sri Lanka
CSC sales code: SLK
Phone SN: R28JB3QB3VL
IMEI: 35
HW version: MP 0.200
RF cal date: 20171128
Chip name: MT6757
Modem board: MT6757
Security patch: 2019-02-01
Boot Warranty bit: 1
SIM State: READY,READY
Checking Super user right... true
Searching server... OK
Checking server answer... OK
Initialization zTool... OK
Running zTool, please wait... OK
Reading data from phone... OK
Preparation of data... OK
Writing data to phone... OK
Rebooting phone... OK