The iPhone 13 is expected to be the big star of the September 14 Apple event, and we have already heard a lot about the new iPhone. Rumors and leaks have revealed everything from camera upgrades like a smaller notch and portrait mode video to a faster A15 Bionic chip and a 120Hz display on the Pro model.

As we get closer to the iPhone 13 launch, some very interesting last-minute leaks have emerged, including the possibility of new iPhone 13 colors, a larger battery and storage options. I am particularly intrigued by the purportedly improved Night Mode, which should allow users to capture starry skies without blurring photos.

However, there are still quite a few things we don't know about the iPhone 13 that will finally be answered at Apple's event. From pricing and the main differences between the four models to how the most exciting upgrades might work, here are five major iPhone 13 rumors that need to be revealed in detail.

This was a bit of a whirlwind. Early in the rumor cycle, it was said that the iPhone 13 would be priced about the same as the iPhone 12. This means that the iPhone 13 mini will start at $699, the iPhone 13 will start at $799, the iPhone 13 Pro will start at $999, and the iPhone 13 Pro Max will start at $1099.

While there have been recent reports that the iPhone 13 could be more expensive due to higher production costs, it is hard to imagine Apple charging more than the iPhone 12 series for this year's lineup. If anything, the storage tiers could go up slightly. Interestingly, one retailer leak suggests that the iPhone 13 and iPhone 13 mini will not offer any 256GB storage options this year.

Apple is reportedly testing Face ID, which can recognize faces even when wearing a mask. This is according to FrontPageTech, which claims to have seen several prototype devices that Apple is using to gauge how effective this upgrade will be.

This would be a very welcome upgrade for Face ID, given that the iPhone 13 will reportedly not support Touch ID on the display as previously rumored, based on the continued proliferation of Covid-19 and Delta variants it is likely that people will be wearing masks in public for the next few months.

The question is whether Apple will be able to get this Face ID upgrade in time for launch, and how well.

Rumors suggest that at least some iPhone 13 models will feature an always-on display, presumably allowing users to check the time, battery status, and perhaps notifications at a glance without having to turn the display on completely. However, it is not clear if this feature will be limited to the iPhone 13 Pro series or if the regular iPhone 13 and iPhone 13 mini will have always-on screens.

Only the iPhone 13 Pro and iPhone 13 Pro Max may be treated as always-on, as they may require adaptive 120Hz panels that can reduce the refresh rate. At this time, only the iPhone 13 Pro is said to offer this benefit. However, I expect all iPhone 13 models to support the always-on display feature.

If there is one area where I would like to see Apple catch up to Samsung, it is optical zoom on telephoto lenses. For example, the iPhone 12 Pro Max technically has a 5x optical zoom, but the real optical zoom is 2.5x. iPhone 12 Pro has 2x. The Galaxy S21 Ultra, on the other hand, has dual 3x and 10x telephoto zoom lenses.

There are rumors that Apple is working on a folding or periscope zoom lens for the iPhone 13, but recent reports indicate that Apple will not be able to offer this upgrade until the iPhone 14 in 2022. In the meantime, the iPhone 13 Pro series is said to offer a much improved ultra-wide lens that captures more light and faster autofocus.

Many iPhone users wish the notch at the bottom of the display would go away, but it appears that the notch will remain on the iPhone 13. The good news is that this display obstruction may be reduced by 25% in the new iPhone.

Apple will reportedly accomplish this by moving the speaker to the top of the iPhone 13 design as well as reducing the size of the TrueDepth camera sensor. iPhone 14 will reportedly replace the notch with a punch hole, but this is very based on early rumors and renderings.

We will provide answers to all questions as soon as Apple's event is over. Until then, check our frequently updated iPhone 13 hub for the latest news and leaks, and our Apple Event Hub for other products to be announced by Apple on September 14.