Originally Posted by Wise-Broccoli8301

Anyone had issues where a T-Mobile sign in session expires or something like that and I have to re-authenticate? Using my number, it tells me my number is already used. I sometimes punch in a relative's number to get back on but I've heard rumors of some sort of verification coming soon to prevent too many people from getting free WiFi by just using a friend's phone #?

Kinda annoyed this happens, but if I were to guess it's probably related to the randomized MAC address feature in most modern smartphones. I'm thinking my phone decided to switch it up sometime in flight and as a result the plane thinks my phone is now a new device. Just curious if anyone's run into this.

Phone in question is Pixel 9 Pro XL on Android 15.

Originally Posted by Xyzzy

I have run into this too. If the phone restarts or if they restart the Wifi system then it asks me to authenticate again and of course it tells me that my number has already been used. I've also had this with a device that doesn't randomize the MAC address with each connection, so I have to try to force it to do so or I can't reconnect. It's quite annying.