Hi Jonas, let me try to answer your question as detailed as possible.
In System Settings->Mobile->Carrier->Carrier I have due to my location (most of the time) three entries: -Automatically -Netz -O2-de My provider is Simyo using the E-plus network in Germany. I am choosing "Netz" and a tick appears. Phone network quality/coverage (The triangle in the notification bar) is almost full and I get mobile data as shown by a black "H" in a white box. I consider this as manual choice of carrier. As in my region it would not surprise me if coverage fails in some areas, I might loose the carrier going, e.g., by car from A to B. So scenario one would be, truly loosing the carrier for some time. If returning to a place where I have coverage by my provider, I expect that the phone takes my manual setting and uses that carrier. I have, however, the black "R" on white triangle, which I guess stands for roaming. Opening the carrier menu I witnessed two cases (I cannot tell which one happens when). Case 1 is the phone switched to "O2-de" and I have to tap "Netz" and get a rescan to return to my provider, or case 2, it shows the tick on "Netz" (I think I remember grey instead of black) but does require an additional tap on "Netz" + rescan do remove the "roaming triangle" and give me data connection (btw, browser, mail etc also claim that there is no data connection). Scenario 2 is that the phone is with almost maximum signal and data connection and switches (while using, e.g., the browser) from "Netz" to "O2-de" therefore dropping the data connection. I guess that the overall signal of "O2-de" is stronger. In any case, the unwanted switching takes place several times a day. What happens (my guess): Phone switches to only or strongest carrier, while carrier is set manually. If provider carrier is present with strong signal, the phone does not switch back. What should happen: If the carrier is set manually the phone should not switch to other providers or at least switch back to manually set carrier if present (although I would consider the latter behaviour more like automatic) For future consideration, I see three options there: 1) always take strongest, 2) take strongest if home provider not present, 3) only take own provider and never take others (with risk of no connection at all) I hope that was not too confusing. Cheers -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1602634 Title: Unwanted switching of carrier To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubuntu-system-settings/+bug/1602634/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
