Where should I set the send key of Samsung mobile phone without using the Enter key?

The settings for sending messages by the Enter key of the mobile phone are generally set in the App, such as:

1, QQ: Set-? Auxiliary function? There is a "Enter key to send message" switch; ?

2. wechat: at? Set-? There is a "Enter key to send message" switch in the chat:

Samsung phones always display "Unable to connect to the server solution:

1. The movement data of the top curtain is turned on, and the WLAN switch is turned off.

2. Ask the operator whether the data traffic service is temporarily closed.

3. If conditions permit, replace other SIM cards for testing.

4. Settings-More Networks-Mobile Networks-Access Point Name-Menu Key-Reset to Default Settings.

5. Try to turn off the phone again. 6. Check whether it has improved after updating the mobile phone system version.