What to do if the internet speed is slow？

 There are several methods to try: clear the cache, close the background software, switch the airplane mode, switch the machine, restore the phone network settings, etc. The possible reasons are: unlimited data plan speed limit, mobile phone network standard limit, etc. When the WiFi connection speed is very slow, you can also try to disconnect and reconnect the phone's WiFi connection, or try to restart the router once to solve the problem.