Hope the mybb community can help. My mum has a new Lumia 800. Awesome phone! But it chows airtime like crazy! It's used like R100 in a week and she's only made two 1min calls. Then loaded R10 and overnight it's gone! She's currently on Cell C casual chat. All background tasks are switched off. Only using Whatsapp but very little use too. Is there some other setting to switch off for it to not use data? Please help.