Product FAQ
| SUBJECT | VIEWS | FAQ TYPE | MODEL | LAST UPDATED | DETAIL |
|---|---|---|---|---|---|
| The module cannot register to the telecommunications network, but the SIM card has displayed Ready, but AT+COPS cannot register normally. How can I confirm? | 6 | Applications | GTM-204M-4GE | 2021-12-01 | |
| The module has been used for a period of time, and the SIM card can be registered, but suddenly it can send text messages sometimes, sometimes not. How can I confirm the problem? | 4 | Applications | GTM-204M-4GE | 2021-12-01 | |
| Through SCADA software and module communication, one of the two devices can send text messages, and the other can communicate but cannot send text messages. How can I confirm the cause of the problem? (GTM-204M) | 2 | Applications | GTM-204M-4GE | 2021-12-01 | |
| The module can’t recognize the SIM card, and the AT+CPIN command will reply to ERROR. The result is still the same after changing the SIM card and rebooting. How can I confirm? (GTM-204M) | 2 | Applications | GTM-204M-4GE | 2021-12-01 | |
| I used GTM-204M to make a call, but the user has not answered the call, but why does the Log message show that it has been answered? (GTM-204M Series) | 12 | Applications | GTM-204M-4GE | 2020-11-24 | |
| I confirm that the module is registered through AT Command, but the network connection still cannot be established. What should I do? (GTM-204M Series) | 9 | Applications | GTM-204M-4GE | 2020-11-24 | |
| What are the frequency bands currently supported by the 4G module? Which countries can use it? (GTM-204M Series) | 8 | Troubleshooting | GTM-204M-4GE | 2020-11-24 | |
|
Please refer to the link below:
What are the frequency bands currently supported by the 4G module? Which countries can use it? |
|||||
| The module has been at stat=2, Not registered, and can be registered with another SIM card. What should I do? (GTM-204M Series) | 2 | Troubleshooting | GTM-204M-4GE | 2020-11-24 | |
|
Please refer to the link below:
The module has been at stat=2, Not registered, and can be registered with another SIM card. What should I do? |
|||||
| How to send and receive long content SMS (content is greater than one sms)? Support Chinese? (GTM-204M Series) | 2 | Troubleshooting | GTM-204M-4GE | 2020-11-24 | |
|
Please refer to the link below:
How to send and receive long content SMS (content is greater than one sms)? Support Chinese? |
|||||
| After installing the USB Driver on Windows 10, an abnormality caused the computer to be a blue screen. How to solve it? (GTM-204M Series) | 12 | Troubleshooting | GTM-204M-4GE | 2020-11-24 | |
|
Please refer to the link below:
After installing the USB Driver on Windows 10, an abnormality caused the computer to be a blue screen. How to solve it? |
|||||
