"Small squiggly mark on iphone 6+ screen: A small squiggly symbol appeared on the bottom right hand side of my iPhone 6s+ screen a couple of months ago. Someone else posted the same question a couple of years ago, but it was never solved other than a suggestion that it may be a hardware issue. It’s definitely not a crack…quite a mystery."
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Squiggly Line on iPhone:
A. Provide the URL of the Thread:
What the link to this thread you are speaking of? If it is not showing right now, then it seems you are all set. As for the squiggly symbol, what was it representing, and what it automated (moving)? It may have been not more than part of the GUI of the app you were using.
B. Take a Screenshot:
Next time you see this, take a screenshot of it, and then view it in the Photos app.. If is shows in the screenshot, then it is part of the iOS. If not, then it is likely a hardware issue.
C. Find the Image:
Google this by keyword, and see if you can find an image of it: https://images.google.com/