Fortnine recently recommended grabbing a used Sonim phone (https://www.sonimtech.com/ https://www.sonimtech.com/) to use as a motorcycle mounted phone. They're

Fortnine recently recommended grabbing a used Sonim phone (https://www.sonimtech.com/ https://www.sonimtech.com/) to use as a motorcycle mounted phone. They're designed for EMS workers, so they're waterproof and have mappable physical buttons so you can use key functions with gloves on.