Finally I can’t believe people are still touting the ‘void the warranty’ thing. Unjailbreaking the iPhone is as simple as plugging the phone into the computer, launching iTunes and clicking on ‘Restore iPhone’. Unrooting and Android phone may not be as simple but it can be done. And once back to factory state, no one is the wiser.
I guess it depends on the method. Like I mentioned before, unrooting many android models with the proper one touch method is as simple as clicking unroot on the phone. For the ones I have had you dont even need a computer to do it.