You really don't understand how amazing this PALMS UP reminder is. Not only that, but you'll never drop your phone again (like I ALWAYS do). You'll have way more control over your phone while you run/walk, scroll through the 'gram, or walk to class.
The BEST part is that if you hold your phone while you walk you'll be reminded to always walk with your palms up! Walking with your palms up is the natural alignment of your body and can fix SO many upper back/should/neck postural issues. TRY IT. I mean it.