Part of the earlier conversation was about using your phone to pay for things its in the list of exceptions,
https://www.gov.uk/using-mobile-phones-when-driving-the-law Using a phone, sat nav or other device when driving
It’s illegal to hold and use a phone, sat nav, tablet, or any device that can send or receive data, while driving or riding a motorcycle.
This means you must not use a device in your hand for any reason, whether online or offline.
For example, you must not text, make calls, take photos or videos, or browse the web.
The law still applies to you if you’re:
- stopped at traffic lights
- queuing in traffic
- supervising a learner driver
- driving a car that turns off the engine when you stop moving
- holding and using a device that’s offline or in flight mode
Exceptions
You can use a device held in your hand if:
- you need to call 999 or 112 in an emergency and it’s unsafe or impractical to stop
- you’re safely parked
- you’re making a contactless payment in a vehicle that is not moving, for example at a drive-through restaurant
- you’re using the device to park your vehicle remotely
Got an Amazon Auto for my car recently (was free for buying expensive tyres) works pretty well when there's a phone signal.
news.sky.com 
