I am one of those who have lost or stolen many cell phones and what I always regret the most is that I lose many of my contacts. Also, on some occasions I have fallen into the error of deleting calls and I have seen that deleted an important number and there is no way to recover it. But I see that my problem is solved with this useful application! Besides, there are no excuses when your friends say they don't call you because they have lost their contacts. Recommend also Syncit, to keep the friendship.