These are the two quick-thinking four-year-old boys who used their mum's phone to dial 999 when she fell unconscious at her Kenley home.
Smart twins Roman and Samuel Sharma, both pupils at Laleham Lea Nursery School, in Purley, managed to unlock their mum Claudia's iPhone using her thumb while she was passed out on the floor.
They then activated the Siri voice-control function and used it to call 999 and ask for help.
Claudia, who is also mum to Luca, 2, had taught the twins how to call...
