Cool God F2 mobile phone card 2 can't send a message, which will remind you that the SMS center does not exist. Please set it. What happened?

If the dual-card mobile phone card 1 (or card 2) cannot send short messages, we suggest that you:

1. It may be a network signal problem: check whether the call is normal; Or try to change the location with a better signal.

2. Try to re-enter the SMS center number.

3. If you still can't send SMS, try to turn it off and restart.

4. Swap the SIM cards in 1/ card 2 to eliminate the problem of whether they are SIM cards.

5. Check whether the mobile phone has a system update push. If so, please upgrade your phone to the latest version and try again.

6 If not, please back up the data (contacts, short messages, multimedia information, etc. ) and try to restore the phone to the factory settings.

Causes of wireless network signal failure

First, the key to the problem is wireless signal collision. I went to my friend's house again and scanned the surrounding signals through the Network Stumbler wireless signal scanning tool. As a result, the author found that there are indeed many wireless signals near my friend's home, which are probably transmitted by neighbors with wireless routers. Moreover, several default SSID numbers in these signals are TP-LINK, so the judgment is also a product of TP-LINK company, and the default values are used.

Second, the strength of wireless signals often does not play a major role in the transmission power of their own equipment, but the degree of interference between signals often plays a great role. Therefore, it is the best way to improve the signal strength by reasonably modifying the wireless signal transmission frequency band and avoiding the default frequency band as far as possible.

Third, the signal is extremely weak due to the conflict of settings. A friend's house has just set up a wireless network, and the equipment used is a TP-LINK router. However, in actual use, the network transmission speed is not ideal, the signal coverage is very small, and the ideal transmission distance cannot be reached. After isolating a wall or room, the signal strength will drop rapidly.

Fourth, check the notebook to make sure that the switch of the wireless network card is on, but the indicator light of the wireless network card is still not on. Next, scan the current wireless network with other notebooks and connect smoothly. There is nothing wrong with my friend's notebook hardware, and the corresponding wireless network card parameters in BIOS are also turned on. The driver of wireless network card is repeatedly deleted and reinstalled, and the problem cannot be solved by using the system CD that comes with the system.

5. After investigation, it is found that even on the side of the wireless router, the signal can't reach the highest level, and it can't always work in the full signal state. When I entered the wireless router setup interface, I didn't find any problems. After taking the equipment home, I found nothing wrong and the signal was very strong. I can also have normal wireless communication after two rooms. There seems to be nothing wrong with the equipment itself.