After updating to 1.16.100 I have found that I was unable to play with friends on mobile data. Before this update it worked perfectly fine so I don’t see why it was necessary to make this change (if it even was intentional.) I really recommend that you fix this because I’m often on the go and on top of that my internet goes out very often. I’m sure many people feel the same way. Also, I have checked the cellular data options in minecraft and the iOS settings for minecraft and they were both enabled. I was trying to connect to a server before I even updated and it wasn’t giving me that message. Only when I updated it started giving me that message.