If one of technology's biggest leakers is correct, the iPhone 12 Pro is missing one of Samsung's top smartphone's best features. What is that feature? It's 120Hz refresh rate display technology, which is also found in Apple's iPad Pro.

The news comes from Jon Prosser of Front Page Tech. He is one of the most prolific Apple leakers, but he also has a complicated track record. For example, he said the new Apple Watch 6 would be announced in a press release on Monday, only for the event to be announced.

On September 11, Prosser said "120hz (codename: d6x) didn't make mass production ? *now* you can give up." he tweeted. Prosser's use of emojis and his dire message to "give up" reminded users that the 120 Hz ProMotion refresh rate was a feature they had been hoping for, but rumor had it that it would not happen for some time.

Prosser also revealed that mass production of the iPhone 12 has begun. That phone is expected to be unveiled at an October event, not at Tuesday's Time Flies Event, where the iPad Air 4 may also debut.

The 120Hz refresh rate makes screen scrolling and image movement so smooth that everything looks more comfortable. It is also ideal for enjoying games and videos at higher frame rates. And anyone who spends more and more time with the iPad Pro will notice this.

Apple is also a bit late to the 120Hz party. Samsung has included this technology in the Galaxy S20 Plus and Galaxy S20 Ultra, and the Note 20 Ultra and Galaxy Z Fold 2 have dynamic (auto-adjusting) 120Hz rates.

It would not be unusual for Apple to arrive a bit late to a new technology. The company seems to make it a priority not to be the first to offer the feature, but instead to wait to get it right. And judging from Prosser's words, it seems that Apple was unable to achieve a 120 Hz rate on the iPhone 12.

Is iPhone 13 a lucky number for 120Hz? We'll find out in due course; for all things Apple and iPhone, Tom's Guide is your go-to source.