I've been doing this using an Apple Watch, and have been for the past 3 months or so. I documented it in this tweet: https://twitter.com/john_lam/status/1074527089569615872

Note that I'm paying more to have this experience, but it's been totally worth it. So far I've been quite happy with it. It's amazing how, in the odd times where I've needed to carry my phone with me, how I instantly reverted to my former (bad) habits.

It's a form of commitment device and it's been very effective for me.