Hi all, My mom has an iPhone 6 on my account through the family share plan. Last night we were at their house for dinner and one of my niece's was on youtube while the phone was connected to the laptop charging. Shortly after we got a message that we had used $50 in data overages and our data was being blocked! I looked at our account online and we had used 3+GB within the time she was on youtube. I looked at the phone and indeed it did show 1 connected device on personal hotspot (the blue bar at top). However, the phone also showed it was connected to wifi with full signal. I tried to access the internet on the laptop with the phone connected and was redirected to a "blocked due to data overage" page. I disconnected the phone and both the laptop and phone were able to access the internet fine since they were connected to wifi. I web-chatted with support from my cell provider and they credited my account the $50 in overages, but I'm still at my data cap for the next 23 days until my billing period is up, so any additional data I use I will be charged for. She suggested that the phone will use cell data instead of wifi if the phone doesn't have a good wifi signal, but the phone showed full wifi strength when I looked at it and it was able to connect to the wifi fine directly on the phone. We were only ~15ft from the router with a clear line of sight. Anyone have any issues with this or any insight onto why the phone would route over the cell network versus wifi when it has a tethered computer connected? Thanks!