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I got a problem with my Ubuntu phone. I have no icons on the "Apps"-Screen anymore after i did a reboot. I can only run applications wich are in the sidebar. When i close an application the phone reboots. I would like to reset my phone but i don't want to lose all my data, so i tried to connect it to my pc but the device is just not found.

I got Windows and Manjaro on my PC. I installed the android-tools-adb stuff o my Manjaro system but it can't see my device neither.

What can i try next ?

Greetz, Max

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A search for 'aquaris usb' would have landed you at already answered question 602488, in which my answer was this:

Ubuntu touch does not allow USB interaction as long as the phone screen is locked. Even if it is only locked by slide, this can block the interaction. I also made sure my screen doesn't lock after idleness, so this locking doesn't happen halfway through a transfer.

Also, ~/.android/adb_usb.ini on your computer is a list of valid vendorIDs that are allowed to connect. I found that list empty (or non existent, don't remember, doesn't matter). Just add a new line with the vendorID for your phone: If you have MX4, add 0x2a45, if Aquaris E4.5, the ID is 0x2a47. Aquaris E5 probably the same. Otherwise look it up by using lsusb. You can of course also add both to be sure ;)

~/.android/adb_usb.ini :

0x2a45
0x2a47