Board Thread:General Discussion/@comment-35065776-20180816043457/@comment-2001:44B8:31F7:E904:113A:717D:2702:B635-20180817051357

You could buy an iRing. http://www.iring.com/shop It is reusable, so you can remove it if it becomes redundant, and can swap it to a new phone or case when upgrading. Or, I understand there are some phone cases that have a wrist strap.