I bought a used S 3.
It works great but I noticed that I couldn't update the software and can't run "back up assisisant plus".
When I contacted the seller he said it was rooted.
I've heard of it but I'm not sure exactly what it means, what the advantages and disadvantages are, and if I can or should unroot it.
I would think that not being able to update it alone is a big disadvantage.
Can anyone give answers?