Maybe you were sleepwatching premium content.

I won’t speculate it was top-shelf porn, but shame on you!

Too many negative votes, comment buried. Show the comment

Shit, this is like the conclusion of a modern day ghost story. "But when the OP awoke the next morning, their phone had used $63 worth of data—without any apps open! OooooooOOOOooooo!"

A similar thing has happened to me. The messages are delayed and then sent all at once. I've gone over my data that way too. Give your phone company a call, it's part of their contract to prewarn you if you're going to go over.

They did warn her, she woke up to the messages. She didn't say they came all at once, probably over the course of the night. She may also have her phone set to Do Not Disturb for overnight.

Check your setting, under cellular data it should show what apps used data, and when. Some phones even let you to individually toggle what apps are allowed to use your cellular data.

You should also check the settings and make sure "automatic updates allowed while on data" is disabled.

Check your phone for virus, malware, and trojen. Your phone could be infected and have programs that run in the background sending and receiving data.

do you have verizon?

They are from Australia. We don't have that Telco here.

Download an app recently that overrode your WiFi download only? Did your settings get switched to Data for auto updating a phone? Check those settings and find out what used the data in the first place under Data usage!

Check your settings. On my phone I can set it so that if it goes over a certain amount it'll automatically shut off my data so I dont go over. I usually set it to 0.02 below my plan. It'll also show me how much data each of my apps is using.

Too much checking FML, I reckon.

1) If you have data limits, use WiFi as much as humanly possible, especially at home.
2) If you don't have a home WiFi setup, then you need to look into Unlimited data plans (even ones that throttle your speeds lower once you hit a certain amount of data used, but don't charge overage fees).
3) Turn off auto-updating your apps, or set to WiFi only.
4) Set data usage alerts for 50%, 75%, 90%, so you may have more advanced warning.
5) Install an Antivirus/Malware scanner on your phone to check for problems. With that much data usage in one night, your phone may be a Zombie for some script kiddie's DDoS attacks.
Good luck.