Exclamation mark on mobile phone WiFi

WiFi connects but there is no internet, an exclamation mark is appearing on the Wifi of the cell phone, see in this video how to solve this problem easily and quickly, without having to reset or reinstall software.
SITUATIONS WHERE THIS VIDEO CAN BE USED:
* My Wifi Connects more does not have internet;
* Wifi connects but gets an exclamation mark on top;
* Exclamation mark upon wifi;
* Exclamation point on Wifi and no internet.
DISCLAIMER:
This video tutorial is intended for educational demonstration only. This should not be used for malicious actions. I am not responsible for what the visitor comes to with such information.
HASHTAGS:
#ExclamationOnWifi
#WifiWithoutInternet
#WiFi
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