Using RePhone GSM+BLE with Arduino IDE using Arduino IDE for RePhone Kit, LCheckSim (CheckSIM.ino) is working but LGSM (call_test.ino & sms_test.ino) not working showing just blank screen in serial monitor.
Also LBT (BTClient.ino & BTServer.ino) works sometimes only.
What could be the issue? Could the board be damaged?
Firmware updated with no issues with CheckSIM.ino & HelloWorld.ino