CN G203 - Troubleshooting Common Problems; Device Not Responding; Verify Authorized Phone Number

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common problem:
1.After authorized, why the device does not respone the commands or calling?
Due to the different communication methods of operators in different countries, the actual
number recognized by the device may be different. For example, your authorized number is +86
12345678, and the actual device acquisition number may be 12345678, resulting in invalid
authorization.
When the authorized number to send the instruction and dial the telephone device does not
correspond, you can use this number to send the verification instruction to the device to verify
whether the authorized number you filled in is correct. The instructions are as follows:
0000#CHECKTHEPHONE#
The device will feedback: YOUR Phone Num:XXXXXXXXX to re-authorize the number