BlackBerry CEO John Chen has used the company’s BlackBerry Passport launch event to mock Apple over the recently reported iPhone 6 bending concerns.

With a number of early iPhone 6 Plus adopters claiming their new phones have suffered bending issues while carried in their jeans pockets, Chen used his time on stage to poke fun at the company’s more illustrious rivals.

Although not mentioning the iPhone 6 by name, Chen referenced a new phone with bending concerns.

Laying in to Apple’s latest phone line, which shifted a staggering 10 million units in just three days, Chen stated “ I challenge you to try bend our Passport. ”

The Passport is BlackBerry’s latest smartphone. The unusual phone features a 4.5-inch square display alongside a physical QWERTY keyboard.

Although we have suffered no issues with our iPhone 6 or iPhone 6 Plus units to date, a number of owners around the world have complained of bending woes.

Posting on Apple forums, one new iPhone owner – writing under the user handle ‘hanzoh’ stated: “Yesterday, I left at 10am with the iPhone in my left front pocket of my suit pants. I drove 4 hours to a wedding, which also involved a lot of sitting during dinner etc but also 2-3 hours of dancing.

“I left at 2am and went to bed, driving home 4 hours back. So in total, the 6 Plus was about 18 hours in my pocket while sitting mostly. As I lay it on the coffee table and sat down on the couch to relax from the drive (yes, sitting again), I saw the reflection of the window in the iPhone slightly distorted.”

Backing up complaints, a number of iPhone 6 owners have posted images of their misshapen phones.

Read More: Samsung Galaxy S6 release date