Why would I pay over £200 for something that is already free on my phone.
I’d prefer to put a device like that on the bars rather than a more expensive phone, plus it will preserve the phone battery to use in case of emergency on longer rides
This. Also if I want to use a GPS device when on my Brompton (not my only bike), there is only space on the M-bars for a small device.
Also have you tried using a phone touchscreen in the rain or in winter with thick gloves?
I'm currently using a Wahoo Elemnt Bolt - love the buttons instead of touchscreen, very long battery life, small size, and LCD screen that's no problem to read even in direct sunlight