Samsung SM-A300H Error While Searching For Networks

Samsung SM-A300H Error While Searching For Networks and No service
Operation: Activate DIAG
Selected model: SM-A300H/DS
Selected port: COM415 SAMSUNG Mobile USB Serial Port
Software version: 31.5

Waiting ADB device... OK
Reading phone info...
Model: SM-A300H
Android version: 4.4.4
PDA version: A300HXXU1AOAE
CSC version: A300HOJV1AOA2
Phone version: A300HXXU1AOAE
Product code: SM-A300HZSDAFR
CSC country code: Kenya
CSC sales code: AFR
Phone SN: R51G2015WZW
IMEI: 35757---------------
HW version:
RF cal date: 2015.01.27
Chip name: MSM8216
Modem board: MSM8216
Boot Warranty bit: 1
Activating DIAG... OK
Activation DIAG done

Done with Samsung Tool PRO v.31.5
Please help me