V895N After Unlock no service

I open the phone after unlock and change cable network etc still not fix

Customer said that he have problems use this phone sometime he get singal and sometimes that no service

please i need your assistance

Code:

Connect the phone powered off with both volume down and up pressed or connect the phone powered off and leave it connected to the usb till it shows the battery/charging screen ;
Phone detected (@usb.inf,%usb\composite.devicedesc%;USB Composite Device)
Preparing to enter download mode;
Preparing to open COM81
Connecting;
Init;
Port opened;
Phone detected (@oem177.inf,%qcomdevice90080%;RELINK HS-USB QDLoader 9008)
Preparing to start flash mode;
Preparing to open COM45
Connecting;
Loading;
Init;
Port opened;
Hello Received;
BOOT Loaded;
Getting config;
Getting mem info;
Found an eMMC memory 22D4

IMEI:        35690706621987-0
PTH:        13
PTS:        W7C
PROV_ID:        V895N-2GVDNZ2
SBTADDR:    1C:CB:99:23:A8:82
SWIFIADDR:    1C:CB:99:23:A8:83
HS_PN:        SAA6197AAS0C
SSN:        3PKC34CBTMY03EV

Work id:        1328BD55
Setup 1;
Done;
Setup 2;
Done;
Setup 3;
Done;
Uploading;
Done;
SECURITY: X9W7FJC0BG00 Size: 00000430
Backup saved to: 35690706621987-0
Backup file(s) removed;
Checking the simlock;
Magic ok;
Unlocking;
SIM_LOCK REMOVED !