So lately, it seems that my brother has been using an obscenely huge amount of data each month. Like, he'll have used more than 13 of our 15 gigs of shared data. When asked about it, he claims that his phone doesn't automatically connect to our wifi. I took a look at the phone a few months ago and he had had his personal hotspot turned on, which I assumed had something to do with it, but it's still happening. Is there possibly a reason that this is happening, or is it most likely that he just doesn't feel like using the wifi? (He's been known to claim that using data is faster than our wifi, but that's another story) I'd like to get this cleared up asap, because my parents and sister are starting to get pretty upset (yet somehow I'm the one trying to solve this? )
Thanks in advance for your help!