Samsung Galaxy 7 SPRINT MIPI DEVICE FAIL

No service (No signal) of models above mentioned can be caused by FEMid defect

 - Check the below items to verify the root cause whether FEMid component or not.
Enter Dial mode > Input *#0011# > Service Mode
1) MIPI DEVICE FAIL
2) DEVICE MID=0x20c, PID=0x008

 settings
activate this phone
vol- vol- vol+
vol+ vol+ vol- [shows the service mode]
testmode->settinginfo->setting->system->nv_backup_test->efs_clear&restore
reboot

I tested it only in sprint handsets, dont know others, android 7 does not shows this service menu, you need to downgrade to 6 within the same rollback bit protection.
Hope it helps.

if its showing 2 options
exist a golden backup
backup type = secure_hw

The Solution for MIPI DEVICE FAIL is to Downgrade 7.0 nougat to 6.0.1 PL6 marshmallow.

And then to go into Settings>Activatedevice>Vol-vol-vol+
Vol+vol+vol- hidden menu.
Select test menu
Find the GSM CDMA Selection. Enable GSM.
Restart.

The network will be back

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