Since Apple first introduced 4.7–inch and 5.5–inch iPhones in 2014, both devices have been largely similar.
Last year’s iPhone 6s and iPhone 6s Plus differed only when it came to optical image stabilisation and a slightly brighter screen in the latter.
But new rumours suggest Apple is planning to diverge its two flagship phones in a major way in 2016.
So, what will the differences between the iPhone 7 and iPhone 7 Plus be?
And could it mean the phones get new names altogether? Read on and we’ll examine all the chatter to see what’s what.
Dual lens vs single lens?
Until now, the only major difference between the iPhone 7 and iPhone 7 Plus was believed to be their cameras.
The smaller iPhone 7 would come with a single lens shooter, the larger iPhone 7 Plus with a dual lens effort.
Case leaks had backed this up, showing a larger space for the double lens unit on the iPhone 7 Plus.
However, new rumours on China’s Weibo social network have thrown this all into doubt.
Word is that Apple will be going all out with the iPhone 7 Plus and will equip it with dual 12-megapixel sensors.
The iPhone 7 will instead feature a single 21-megapixel unit. This seems to be an extreme change and not wholly in keeping with Apple’s steady approach to updating its cameras in the past.
Lower storage for standard iPhone 7
Apple’s plans for iPhone storage have been the subject of much speculation in recent weeks.
A number of analysts have said that it would be ditching its increasingly redundant 16GB models, and instead going with 32GB, 128GB and 256GB storage options for both the iPhone 7 and iPhone 7 Plus.
However, the same Weibo leakers behind the latest camera chat reckon Apple could offer the iPhone 7 in 16GB, 64GB and 128GB versions, with the iPhone 7 Plus available in 32GB, 128GB and 256GB.
Such a move would likely leave potential iPhone 7 owners relying on cloud storage if they opt for the 16GB model.
With apps growing in size and 4K video taking up huge amounts of space, such small devices are becoming virtually pointless.
More RAM for your buck
Apple isn't wont to reveal too much about internal specs. But word is that it'll be upping the RAM in the iPhone 7 Plus to 3GB, leaving the iPhone 7 on 2GB.
Such a move would make the iPhone 7 Plus much more powerful and capable of handling 4K video editing and resource-hungry apps compared with its less capacious stablemate.
Screen sizes and resolution
It seems nailed on that the iPhone 7 will have a 4.7–inch display, while the iPhone 7 Plus will come with a larger 5.5–inch effort.
However, having offered better resolution on the iPhone 6s Plus last year, it’s likely Apple could up things again, making the iPhone 7 Plus brighter and with better pixel density.
It’s not a deal-breaker for average users, but it could push sales of the larger phone among mobile fanatics.
Branding rethink could be afoot
All the differences outlined above certainly point towards the iPhone 7 Plus being much more than just a large version of the iPhone 7.
There’s been plenty of talk about the 5.5–inch model being renamed, possibly as the iPhone Pro. That could mean the iPhone 7 being simply dubbed the iPhone.
This would keep things clearer in consumers' minds and ditch the numbering which has started to make the iPhone brand feel a bit tired and dated of late.