Another option: I recently purchased a Blackview BV5500 Pro unlocked Android phone from Amazon for $140. This is a IP68 ruggedized waterproof phone. The camera isn't great and performance isn't cutting edge, but if you just need a smart phone to run Google maps, send messages, any maybe play music, it does the job. So far it performs WAY better than the $400 Kyocera Duraforce Pro I had previously. And as an unlocked phone it doesn't have any of the carrier-specific bloatware.
And of course, there is added peace of mind knowing that I'm not risking a $1000 phone to the elements.