Wifi Automatically Turning ON after iOS 11 Update

I'm facing this issue after updating iOS11 in my recently bought iPhone 7

I usually turn off wifi during the night and found it ON in the morning. It automatically turns ON resulting in unnecessary battery drains.

Would appreciate a fix !!

Solution 1:

WiFi & Bluetooth under iOS 11 will both automatically switch back on at 5am.

The only way to completely disable either is from Settings.

If you want to completely disable Wi-Fi and Bluetooth for all networks and devices, follow these steps:

• To turn off Wi-Fi, go to Settings > Wi-Fi and turn off Wi-Fi.

• To turn off Bluetooth, go to Settings > Bluetooth and turn off Bluetooth.

Refs:

• Apple KB - Use Bluetooth and Wi-Fi in Control Center with iOS 11
• Lifehacker - How to (Really) Turn Off Wi-Fi and Bluetooth in iOS 11