Use Wi-Fi as Much as Possible
Always be mindful of how you use your data. This means checking your data on your iPhone to make sure you’re not running out and making sure you’re always searching for a Wi-Fi connection to use.
Wherever you go, chances are that you’ll find a place with free public Wi-Fi. Try to use that as much as possible to reduce your data consumption.
With that said, you need to be careful. Many cyber criminals use public Wi-Fi networks to find their next victim. If you’re going to be using insecure Wi-Fi networks, the best course of action is to protect yourself with the best VPN service for your iPhone.