How to turn internet back on (iphone)?

I called my provider and asked them to turn off the internet because it was charging me for random things, but i need it back on temporarily. Is there a way without calling them? I believe they are closed at the moment

Only if you have Wi-Fi

Try going to settings--->general--->and cellular. And flip on the cellular data. If it is already on them you need to call them. Also you don't need to call them to turn it off you can do it this way too!

Use a Wi-Fi connection.