How tin foil is helping thieves steal mobile phones

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London has seen a huge rise in phone theft in recent years. On average more than 180 phones are stolen every single day in the capital. It's incredibly lucrative for the criminals involved. Many use high speed electric motorbikes, which are seriously hard to catch. BBC London's Jessica Ure has been investigating what's happening for a new iPlayer documentary called 'On the Front Line: Fighting the Phone Snatchers'. For London Latest, Jessica shares some of what she's found. (Image credit: Metropolitan Police)