What is the Biggest iPhone? iPhone Sizes Explained in 2026

Key Points:

• The biggest iPhones on the market are the iPhone Pro Max series.
• The largest current-generation Apple smartphone is the iPhone 17 Pro Max at 6.9 inches.
• Apple iPhones have gradually gotten larger over time, and it's possible future models could cross the 7-inch display mark, into true phablet space.

An iPhone is one of the best pairings for a Talkmobile SIM Only plan, but they're not all built equal. In 2026, we have three mainline sizes for Apple smartphones through their respective generations to go through, and there's no easy one-size-fits-all solution. We're going through everything you need to know about iPhone sizing, including what the biggest iPhones on the market are, so you can make an informed purchasing decision.

The three current sizes of iPhones available in 2026 are the iPhone 17e (a mainstream model), the iPhone 17 (standard model), and the iPhone 17 Pro Max (the flagship). The displays and chassis are around an inch different in size, but the feel can fundamentally change. Here are the tech specs and dimensions that you need to be aware of.

Display size and physical dimensions aside, there's a wealth of differences between the base iPhone 17 and the iPhone 17 Pro Max configurations. While the iPhone 17 and iPhone 17 Pro are slightly different in size (the same 6.3-inch display but with very minor dimensional differences of 5.91 x 2.83 x 0.34 inches), most people will want either the full-size, fully featured Apple smartphone or the entry-level model.

The iPhone 17 features the standard A19 chip with a 6-core CPU, a 5-core GPU, and a 16-core Neural Engine built for Apple Intelligence. At stock, it has a 30-hour projected battery life with video playback. By comparison, the iPhone 17 Pro Max uses the A19 Pro chip, complete with a 6-core CPU, 6-core GPU, and the same 16-core Neural Engine, backed by a far larger 37-hour projected battery life. With a larger phone comes a bigger battery, so it has the potential to last over several days of intensive use.

Another core component in deciding between the smaller iPhone 17 and the larger iPhone 17 Pro Max is the differences in the camera system. The base model has a 48MP Dual Fusion system, with a dedicated main shooter and ultrawide option, and the ability to shoot 4K at 60 FPS. Whereas the iPhone 17 Pro Max has a triple camera setup; the same two lenses joined by a 48MP Fusion Telephoto lens, and support for 4K at 120FPS. If you need the latest cutting-edge technology, then the Pro/Pro Max may be worthwhile, but for most users, the base model may be more than enough.

It's no surprise that smartphones have gotten larger over the years, and this is just as true of Apple's iPhones as well. We see this with the generational shifts from the original iPhone from 2007, having a 3.5-inch LCD. In contrast, a decade later, the iPhone X debuted with a 5.6-inch OLED display (a 60% increase). That leads us to the first larger model, the iPhone 11 Pro Max, that had a 6.5-inch OLED display.

The current largest iPhones have remained incredibly similar in the seven years that have passed. The iPhone 17 Pro Max features a 6.9-inch display, the same as the previous-generation iPhone 16 Pro Max, too. This was the biggest minor bump up since the iPhone 12 Pro Max bumped things with its 6.7-inch display, and this carried over to the iPhone 13 Pro Max, iPhone 14 Pro Max, and iPhone 15 Pro Max, which begs the question.

Rumors abound about the future of iPhones, with some claiming we could see a folding iPhone at long last, and others thinking that a potential iPhone 18 Pro Max could take the full swing into phablet (phone+tablet) territory with a 7-inch+ display. Given the trend we've seen as more people continue to watch media on their smartphones, and the power of 5G's hyperconnectivity, the gap between phones and tablets could shrink as our handsets get faster, too.