@Tony, yes it's complicate to replicate, but I travelled 2 times in train without mobile cover, and the mobile can't recovery the 3G connection after that.
The terminal it's a BQ Ubuntu 14.10 (r20), last updated 3/19/15. Best regards! -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to network-manager in Ubuntu. https://bugs.launchpad.net/bugs/1424791 Title: Ubuntu Phone: cellular data did not recover after losing coverage Status in network-manager package in Ubuntu: Incomplete Bug description: Hi! Today I travelled in train and I lost my mobile signal. BUG: After have signal, the cellular data (3G) is not recovering. I have to enter in plane mode and exit from that mode for having 3G again. Thanks in advance! To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/1424791/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp

