Lenovo S820 of Unicom Card Why Momo can only send messages when opening a data connection?

Dear users, thank you for choosing Lenovo products.

I am very sorry for the inconvenience caused to your use.

If your mobile phone is connected to the wifi network, but it can't be connected normally, please refer to the following situations and methods to try:

If you find that Momo can't surf the Internet unless he is connected to wifi, you can try to check whether Momo's internet access function is restricted in the music security-traffic monitoring-traffic firewall of the mobile phone.

If other software also has this phenomenon, I suggest you try to compare it when you can connect to other wireless networks around you:

A. If you can connect to other networks normally, you can judge that the mobile phone system and hardware functions are normal. Please follow these steps to try:

1. Availability of wireless network: It is recommended that you use other devices to connect to the wireless network and compare whether you can connect to the Internet normally. If you can't connect normally, it is recommended to reset the wireless network, such as changing channels and changing encryption methods.

2. Do you need to dial? Some telecom network users use ADSL to access the Internet, and they need to verify their identity through PPPOE dialing. Mobile devices can't verify it, so they can't connect to the Internet. For details, please contact Telecom Customer Service (Telecom Customer Service Hotline: 10000) for further consultation.

3. Number of wireless network connections: There may be too many users who use the current network connection to use the network normally. It is recommended to try it in your spare time;

4. Wireless network signal: When the wireless signal signal is weak, it may lead to the failure of normal connection or the failure of normal networking of connected applications. It is suggested that mobile devices try to go to places with strong wireless network signals;

5. Wireless network restrictions: Some network service providers or network departments will restrict the use of wireless networks, such as binding the mac addresses of devices that can be used. It is recommended that you check with the corresponding network service provider or manager;

6. Wireless network in public places: If you access the wireless network provided by merchants or operators, you may need to verify additional information such as user name or verification code. Usually, after the connection is successful, you can open the browser and enter the corresponding user name and password for normal use. For details, please consult the customer service of merchants and operators.

7. If the above suggestions still cannot be improved, the compatibility problem between routing equipment and products will not be ruled out. It is suggested that you replace the wireless network or use routing equipment;

B. Other networks cannot be used normally after connection, which may be caused by abnormal system or hardware functions:

1, please back up the fuselage data and try to restore the factory settings;

2. If you still can't improve after recovery, please take time to go to the local maintenance site to check the processing system and hardware.

If the conditions are limited and can't be compared with other wireless networks, I suggest you do a simple survey according to the above suggestions. If it cannot be improved, please send it to the maintenance site in time.

The address of the maintenance station can be found in official website:

/ServiceStation.aspx I hope the above information can bring you some help, thank you for your support to Lenovo, and wish you a happy life!