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 hello i would like to know 
 after installing ubuntu touch do i have to unroot my smartphone or leave it like that?
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 @linuxfanche 
 if by "unroot" you mean relock the bootloader, DON'T do this, no.
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 C CiberSheep moved this topic from General on C CiberSheep moved this topic from General on
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 @linuxfanche said in Root information ask: after installing ubuntu touch do i have to unroot my smartphone or leave it like that? Just to avoid all possible confusion: you do not need to root your phone in order to install Ubuntu Touch. You just need to unlock the bootloader, and like @Keneda said: leave it unlocked. 

