The evidence that talking on a mobile while driving massively increases risk. Two offences in UK equals a driving ban although hands-free Bluetooth devices are legal.
I sat with a young lad as he died a few years ago when he lost control of his car while using a mobile. His girlfriend died a few days later.
The most commonly used word on insurance claim forms is "suddenly". What they really mean is "I wasn't paying attention when...".
Put you phone away, get two hands on the wheel, and focus on driving. Everything else can wait.