Why my phone wi-fi disabled to on?

I’m sorry to hear that your Samsung Galaxy A31 has a problem with Wi-Fi. Sometimes, Wi-Fi can be disabled or turned off due to various reasons, such as software glitches, battery saving modes, interference from other devices, or hardware issues. There are some possible solutions that you can try to fix this issue and turn on Wi-Fi on your phone. Here are some of them:

• Restart your phone. This is a simple but effective way to solve many minor problems on your phone. Press and hold the power button and select Restart. Wait for your phone to reboot and then check if Wi-Fi is working.
• Check if you have enabled Airplane mode. This mode will disable all wireless connections on your phone, including Wi-Fi. You can turn it off by swiping down from the top of the screen and tapping on the airplane icon. Make sure it is gray and not blue.
• Check if you have enabled Power saving mode. This mode will reduce the battery consumption on your phone by limiting some features, such as Wi-Fi. You can turn it off by going to Settings > Device Care > Battery > Power Mode and selecting Optimized or High Performance.
• Reset your network settings. This will erase all your Wi-Fi, Bluetooth, and mobile data settings and restore them to their default values. You will need to reconnect to your Wi-Fi network after this step. You can do this by going to Settings > General Management > Reset > Reset Network Settings > Reset Settings.
• Update your phone software. Sometimes, Wi-Fi issues are caused by outdated or buggy software. You can update your software by going to Settings > Software Update > Download and Install.
• Contact Samsung or your service provider for technical support or repair. Sometimes, Wi-Fi issues are caused by factors beyond your control, such as hardware defects or compatibility issues. You can contact Samsung here or your service provider here and ask for assistance.

You can also find more information and troubleshooting tips on how to fix Wi-Fi issues on your Samsung Galaxy A31 here, here, and here.

I hope this helps you turn on Wi-Fi on your Samsung Galaxy A31. Have a nice day! 😊