I've had my vivosmart since May 2019. A month or so ago, I noticed a slight bulge in the strap where it connects to the body of the watch on one side. At first I thought it was just wear and tear from tightening the strap (I have small wrists). But it recently occurred to me that the bulge is on the side where the charging port is, and I started to worry that the battery might be bulging. The device still functions and charges fine.
Has anyone had anything like this happen? I've tried to get some photos of it:
This is what the unaffected side of the strap looks like, for comparison:
Here is a side on view:
And here is the entire device from the side, so you can see how the two sides of the strap look different, although admittedly it doesn't look like much; the difference is more obvious in person: