This is exactly what I was looking for in a phone pen: simple, non-permanent and not bulky. I have a Samsung Galaxy S21 and use the Skinit Pro Case (two-layer hard shell). I have had no issues with this strap interfering with the case or fit on my phone. I can continue to use my wireless charging station. My only complaint is that the phone no longer lays flat due to the clip that connects the two ends of the strap on the back, but this is inevitable and certainly less noticeable than with a larger grip/ring/stand on the back . my shop. I've been using this strap for a couple of weeks now and am very happy with it but will come back and update if anything changes.
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