i have heard about that theft, pickpockets, and other things were happening in Qatar itself. I have one friend he came from qatar before he moved in here in bahrain. he just told me that there were thieves and snatchers also in the malls and markets. for your security better to be watchful and attentive on your belongings and by that you are refraining them on having a chance to get something from you. so far here in bahrain i have walking and malling for the past years and never i heard a report about snatching of wallets and mobile phones so far. I will be much careful then when I moved to qatar.