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plz help me know what happend
i've been using apple & its ios for quite some time.so i'm pretty newbie with android.
yesterday i bought a new galaxy S4 from the local classified ads. everything was ok. except the phone needed unlocking so it can work with my service provider. so i went to a shop where they do just that.
the guy take my phone for 5 min cuts my sim card to make it fit the s4 slot.then tells me that its not working cuz maybe the phone was stolen and this carrier (BELL) has a special lock wich makes the phone useless.and that i have to go back to whomever sold it to me and ask for answers.(even though i had with me the original box)
i was pissed out of my pants,called the seller,he was clueless.
so i tried it with a sim card of my boss from BELL,and the phone worked.
so i went back to the shop.they took the phone kept talking to each other in their mother tongue(farsi) i think.and after 35 min they hand me my unlocked phone with a major ********* attitude.
non my way home i noticed an app SUPERUSER ?
when i open it,it asks me to updated binary su and to choose between recovery install or install?
does this mean the phone is rooted?
could this be harmfull to the phone?
sorry for the long post
thank you in advance for making me less dumb