Yes, *using* Wi-Fi uses less battery than *using* cellular data. But that does not mean turning off cellular data manually would noticably save battery. If you're using Wi-Fi, the cellular data modem should be mostly asleep, waking up occasionally to check for MMS (the one thing Wi-Fi can't do). And Ubuntu Touch, probably unlike your current phone, is currently extremely strict on what apps can do in the background; a mail or Twitter app couldn't update in the background, for example.
Having said all that, a cellular data switch might be worthwhile, I'd just like to see some evidence. Every little thing added to indicator menus makes them a little more similar to System Settings, which makes the overall mental model of the phone a little more confusing. -- You received this bug notification because you are a member of Unity API bugs, which is subscribed to Network Menu. https://bugs.launchpad.net/bugs/1373463 Title: [indicators] Impossible to disable cellular data from indicator Status in Network Menu: Triaged Status in Ubuntu UX bugs: New Bug description: I was wondering : Why it isn't possible to disable data from the network indicator ? Probably with a switch button that offer the choice between no data or data activated (with the last data activated state (2g only or 2G,3G,4G). Why this ? Because it's the first setting to change to save battery, and probably one of the most used (I asked around me, everyone agreed they would prefer that over Wi-Fi if only one was possible). I think it's stupid to go to the settings app for the most common action (and very frustrating). Of course, this also apply for the battery setting page (that already contain Wi-Fi, GPS, Bluetooth and brightness settings). I asked that on the phone ML, I've been invited to file a wishlist bug there to "help" designers with next iteration of network indicator. So here it is ! [1] : mailing list discussion with already some support to this idea : https://lists.launchpad.net/ubuntu-phone/msg09910.html To manage notifications about this bug go to: https://bugs.launchpad.net/indicator-network/+bug/1373463/+subscriptions -- Mailing list: https://launchpad.net/~unity-api-bugs Post to : unity-api-bugs@lists.launchpad.net Unsubscribe : https://launchpad.net/~unity-api-bugs More help : https://help.launchpad.net/ListHelp
