This is my issue list from using Ubuntu Touch as my primary mobile operating system for a few days. While this seems like a large list, don't let it scare you away. This list shouldn't tell you that Ubuntu Touch will be a failure. There are a few things to keep in mind. First, Ubuntu Touch isn't even in Beta yet. Second, most of these issues are polish-type problems. It doesn't stop the user from doing something, and it doesn't happen very frequently, but it is noticeable. Polishing is something you tend to do when you get the major issues out of the way. Finally, I am using an unsupported device. The only phone that is officially supported at this point is the Nexus 4. These are all issues I experienced on a Nexus 5.
On to the list:
When I first installed Ubuntu Touch, after the wizard, the system wasn't usable until I rebooted. The landing team knows about this issue.
Sometimes, when I boot, the lock screen never comes up. After a few minutes, I tried hitting the power button thinking the system locked up on boot, and the lock screen came up. It turns out the system booted, but the screen had gone blank due to an idle timeout before the lock screen was available. This only happened twice to me.
When hitting the power button to turn off the screen, the backlight stays on. This drains the battery very fast. I have noticed that it will eventually turn off. This is the one of the two problems that I consider a true blocker for me, since the phone dies way too fast. Other users have noticed this on the Nexus 5 and Nexus 7, but I haven't seen a forum post about it happening on the Nexus 4.
In Settings->Storage, in the list of apps, each app is listed twice.
When upgrading apps, the "Transfers" area in the notification bar shows an entry for each app, but the entry only shows a red X to cancel the transfer. It doesn't tell you anything about it, like the app or the download status.
Sometimes, the action bar of the app slides up by 50% of the height of the action bar. This means the top 1/2 of the action bar is cut off, hidden under the notification bar. Sometimes the app fixes itself, but I mostly open up task manager, swipe to kill, then relaunch. I have seen a bug report of this in Launchpad already.
Sometimes, clicking on an app in the home screen that is already open causes weird things to happen. It does work from time to time. I have seen it just hang there for a few seconds, though. When it hangs there, I usually cannot switch to that app anymore. I have to kill it and restart it. I have seen it kill the app and restart it as well. It will sometimes just do nothing. I get frustrating thinking the app won't launch until I realize that it is already open and I just need to switch to it.
In System Settings, the "Updates available" section doesn't go away after you perform all the updates until you relaunch the System Settings app.
Clicking on System Settings->About this phone->Developer mode crashes the System Settings app. I have no idea what is supposed to be in there, but I was curious.
Open up Messenger, Click in the "Write a message..." text box to bring up the keyboard, hit the power button turn off the screen, hit the power button to bring up the lock screen, swipe to unlock. The bottom row of the app (that has the text box and send button) are still in the higher position (as if the software keyboard was still there), but the software keyboard isn't actually showing. Clicking on the text box does not bring up the keyboard because the text box already has focus. You can get back to normal just by scrolling in the app.
Bluetooth does not work. This is a blocker for me, since I use the Bluetooth on my phone to play music while I drive. This is a known issue. I don't know which devices have Bluetooth working.
Sometimes, launching an app will leave you at the home screen, frozen and unusable, for a long time before actually starting the app
The Facebook app is mostly just a webview. My news feed doesn't seem to auto-update. I have to open the menu and click on News Feed, but that doesn't always refresh my news feed. This isn't technically an Ubuntu Touch issue.
When rotating the phone, sometimes the phone detects the first rotation really fast, but takes some jiggling to detect the rotation back.
I sometimes have problems connecting to my work WiFi network. That network is a little....special. Other devices have issues, but Ubuntu on my Nexus 5 has more issues than Android on my Nexus 5. The main problem is the WiFi network requires you to enter in your ActiveDirectory credentials on a page before you can do anything. On Android, the notification bar will usually pop up with something that you can click that takes you to the login page. Ubuntu doesn't do anything to let you know that you need to go to the webpage. As a backup, the WiFi router is supposed to send an HTTP redirect to the login page if you try and access any webpage. This is the part that is the real issue. Ubuntu doesn't seem to want to handle or understand the redirect. If I can't authenticate, then I can't access the internet. I have to drop back to 4G and try again later. I found the easiest way around the issue was to authenticate to the WiFi in Android, then boot into Ubuntu.
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