Our 10 gig family plan data usage spiked this week. Early Tuesday morning 4:40am, we got text messages saying we had reached 50%. Then about 36 hours later, another text saying we'd reached 90%. I have a Droid Razr M and my son has an iPhone 6. Checked usage and it was his phone that had eaten up all the data. He knows how to use his phone and only use data when he intends to, closing background apps and only downloading podcasts when he's on wi-fi. He checked his phone on Tuesday morning and wi-fi was turned on and not extraneous apps were running in the background. Because of the early morning warning, he was being extra careful not to over use data.
That said, I was talking to 2 friends today, both with iPhones and both had huge data spikes about the same time we did. Because of this happening to 2 other people I know at about the same time, I am very suspicious that there's something going on with data usage that's out of our control. Is there a bug in the iPhone 6 OS that's causing this? If so, will we get charged for extra data when we go over this month? We are only 10 days into our billing cycle.