What if Xiaomi's mobile phone can send text messages and make phone calls but can't surf the Internet?

Xiaomi mobile phone can send text messages and make phone calls, but it can't surf the Internet, because it doesn't open WiFi and mobile data network.

1. Open the settings.

2. You can turn on "Mobile Network" and "WiFi" here. Take "WiFi" as an example. Click WLAN.

3. Click the small button on the right to open the WLAN.

4. Click the network you want to connect to and connect. So you can surf the internet.