Apple iPhone 6 Plus buyers have been finding out an unexpected trait in their new devices: they bend when placed in back pockets.

The issue, which is being called "bendgate," is a reminder of 2010's "antennagate," when iPhone 4 users reported a design issue that caused dropped calls.

For those who wear skinny jeans, the situation can be particularly concerning, according to multiple reports circulating on Twitter and Facebook.

The phrase: "Your pants are too tight for your phone" has received hundreds of mentions and the phone has only been available since Sept. 19.

Some people say the device is more malleable than expected, but that might fall short of a design flaw, according to analysts.

"A "bendability test" hasn't been part of our breakability testing to date because up until this week we've never seen a phone thin enough to make this a potential issue," said a spokesman at SquareTrade, according to Reuters.

SquareTrade provides warranties to iPhone users, and said it planned more tests later on this week.

The quirk was first reported on Unbox Therapy, a gadget-review show on YouTube.

Only a couple people took to social media sites to discuss the bend in days leading up to Sept. 22. After the release of the video, which has collected over 7 million views, Twitter mentions of the bend reach 75,000, according to Reuters.

Tweets are pouring in about the "bend in your pocket," the challenge of wearing "tight pants," and that the iPhone 6 Plus device bends "with bare hands," said Brandwatch spokeswoman Dinah Alobeid.

Apple has not commented on "bendgate," but at least one rival smartphone company has weighed in so far.

"I would challenge you guys to bend our Passport," John Chen, Blackberry's chief executive officer, said at an event in Toronto on Wednesday.

Apple confirmed on Monday that it had shipped 10 million units of the iPhone 6 and 6 Plus.

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