Wi-Fi Assist, which is by default set to ON, switches you to 4G automatically if it thinks the WiFi connection you’re using isn’t fast enough. If you’re on a limited data plan, this is going to hurt your wallet.
Here’s how to shut off this feature
1. Under Settings, select Cellular.
2. Scroll down until you see Wi-Fi Assist.
3. Tap the button to set it to off.
You just potentially saved yourself a fortune. Spread the word to anyone else you know with an iPhone. Don’t let them wake up to an eye popping data bill, share this with them.
