[sagher]

Dear youssefbasha : Rooting a smartphones are different as per there manufacturer and android versions. also some more encryption by manufacturers.
i personally use different kinds of rooting software's for different phones. so first you please explain about your phone. some samsung phones are solid rooted and not easy to root them.
my 100 vote for root genius app. its 95% working on any android if not further locked like NAND lock or Solid Root.