It also didn't stay in to several other devices. This has been a common theme in the reviews. The issue, as I see it, is the very tip of the male plug is to long and the incorrect shape. the angle of the beveled end is wrong and longer then all my other 3.5mm cables. Perhaps the tweek the manufacturer did in order to incorporate the smaller shoulder for case clearance threw off the overall parameters during the milling process. This should be an easy fix for MP to address. I have purchased dozens of cables of all kinds from MonoPrice over the last ten years and have never had an issue with any of them. You can not find better quality at great prices anywhere else. I am giving it 2 stars as the overall quality is good.
I have a problem with these cables, on my phone these will easily pop out, it causes a great problem because the volume goes down, the smartphone disconnects from the headphone jack and it is very unusable. I tried one of my other cables from monoprice (the cheaper 3.5mm cable) and it works fine, doesn't pop out, also tried 2 other sets of headphones with no problem. Maybe this jack end is a bit too long or the diameter is a bit too small, something is off and it is very disappointing.