[Thorough Comparison] Differences between iPhone 15/16/17 | Should You Upgrade from Your Current iPhone?

Many iPhone 15 and iPhone 16 users might be wondering, "I'm curious about the iPhone 17, but should I really upgrade?"

Scheduled for release in the fall of 2025, the iPhone 17 series will feature four models, with the addition of a new "iPhone 17 Air" to the standard "regular," "Pro," and "Pro Max" models. While there are many exciting new features like a thinner, lighter design and improved performance, some users might feel their current model is sufficient.

Conclusion: Consider older models for value

While the iPhone 17 offers clear advancements in design, performance, and price, an upgrade is not recommended for everyone. If lightness is a priority, consider the Air; for peak performance, the Pro Max; and for value, older models are also an option.

This article will explain the features and advancements of the iPhone 17 series, comparing them with the iPhone 15 and 16.

*The content of this article includes predictions and observations based on news reports and leaked information. Please note that this is not an official announcement from Apple, and actual specifications and release dates may differ. This site and its authors are not responsible for any damages incurred due to actions taken based on the information provided. Thank you for your understanding.

iPhone 17 Series Release Schedule

In the fall of 2025, Apple announced its new models on its usual schedule. The new ultra-thin model, the "iPhone 17 Air (tentative name: Slim)," has garnered significant attention.

Apple maintained its golden pattern of holding an announcement event on "the second Tuesday of September (Wednesday morning Japan time)," with pre-orders starting that Friday and the release the following Friday.

iPhone 17 Series Selling Price (as of January 2026)

For the iPhone 17 series, the minimum storage for base models was increased from the traditional 128GB to 256GB. While the dollar-denominated prices remained unchanged, due to exchange rates and changes in storage capacity, the domestic selling prices in Japan are as follows:

Point: A feeling of a "de facto price cut"

The iPhone 17 (standard model), despite doubling its capacity to 256GB, is priced similarly to the 128GB model of the 16 series, making it a very cost-effective model.

Main Topics of the iPhone 17 Series

• Discontinuation of "Plus" and Introduction of "Air": The "Plus" model, which was a base model with a large screen, has been removed from the lineup, and the "iPhone 17 Air," boasting an astonishing thinness (about 5.5mm), has been newly established.

• All Models Support 120Hz: Finally, the standard models also adopt "ProMotion technology," resulting in smoother screen scrolling.

• Camera Evolution: The front-facing camera for selfies has been enhanced to 24 megapixels across all models. Pro models feature three cameras, including a telephoto lens, all upgraded to 48MP (48 megapixels).

• Physical SIM Discontinued (Japan Version): From this model onwards, the Japanese version has finally abolished the physical SIM card slot, transitioning to "dual eSIM only."

The iPhone 17 Series will have 4 models!

In the iPhone 17 series, a new "Air" model will be introduced, replacing the traditional Plus model. With four distinct models varying in size, performance, and target audience, you're sure to find the perfect device for you.

Here's a brief overview of each model's features.

Each of the four iPhone 17 series models has distinct characteristics, allowing you to choose the optimal device based on your needs and priorities. Select the model that best suits your usage.

Thorough Comparison of Specifications and Features

We compared the iPhone 17, iPhone 16, and iPhone 15 models. (As of July 2025)

*Information about the iPhone 17 is based on current leaks and predictions, and will be updated as official announcements or new information becomes available.

Differences in Performance (Chip, Processing Speed, etc.)

The iPhone 17 series is expected to feature an "A18 or A19 chip" for the standard and Air models, and the latest "A19 Pro chip" for the Pro models. The Pro chip is also expected to further improve AI processing and performance for high-load applications, enhancing the experience for video editing and gaming.

The iPhone 16 uses the A18 in the standard model and the A18 Pro in the Pro model, offering sufficient performance for everyday use. On the other hand, the iPhone 15 uses the A16 chip, which is a generation older. While it's fine for daily use, you might notice differences in processing speed compared to the latest models.

The refresh rate, which was 60Hz on the iPhone 16 and iPhone 15, has been improved to 120Hz on the iPhone 17.

Differences in Camera Performance

The camera configuration differs for each model in the iPhone 17 series. The Pro/Pro Max models feature a triple-lens setup with "Wide + Ultra Wide + Telephoto," which further enhances zoom photography, Night mode, and portrait functionality with higher precision. Particularly for the Pro Max, an improvement in optical zoom magnification is rumored, allowing for professional-grade photography despite being a smartphone.

On the other hand, the standard models have "Wide + Ultra Wide," and the Air models only have "Wide," indicating a difference in performance. The iPhone 15 and iPhone 16 series are similar, with Pro models featuring a triple-lens setup including a telephoto lens, while standard and Plus models have dual or single lenses, so you need to choose based on your usage.

It is especially important to note that if you are upgrading from an iPhone 15 or iPhone 16 to an iPhone 17 Air, you will only have a wide-angle lens. For those who prioritize video recording and social media posting, the Pro model is recommended.

Battery Differences

Battery life is also a key point for the iPhone 17 series. In particular, the Pro Max is expected to have the longest battery life in iPhone history at approximately 35 hours. The Pro also offers sufficient performance at approximately 31 hours, and the standard model at approximately 24 hours, but the Air is designed to be thin, so its battery life is a bit shorter at approximately 16 hours.

The iPhone 16 series offers up to 33 hours for the Plus and Pro Max, and around 22 hours for the standard model. The iPhone 15 series shows generational differences, with the Pro Max at 29 hours and the standard model at around 20 hours.

If battery life is a priority, the Pro Max or Plus models are recommended. Especially for those who travel frequently or use their phone for extended periods, upgrading to the iPhone 17 will allow for stress-free use.

Design and Color Differences

In terms of design, the iPhone 17 Air's "5.5mm thickness" is a major talking point. Its ultra-thin and lightweight body, the thinnest ever, offers excellent portability and fits perfectly in pockets. While the Pro Max is slightly thicker at 8.725mm, it compensates with a larger battery. Body materials also differ, with the standard and Plus models using aluminum, and the Pro models using titanium, leading to differences in texture and durability.

The camera area design also differs significantly from the iPhone 15 and iPhone 16, which might lead to varying preferences.

Color options also have their individuality; the iPhone 16 features muted tones like Teal and Desert, while the 15 focuses on pop pastel colors. The 17 series is expected to introduce new colors like Green and Orange.

Should you upgrade to the iPhone 17?

Many people using iPhone 15 or iPhone 16 are wondering whether they should upgrade to the latest iPhone 17. Here, we've summarized whether you should consider upgrading to the iPhone 17.

Recommended for:

We recommend upgrading to the iPhone 17 for those who fit the following descriptions:

• Those who upgrade every two years with a regular plan: Upgrading from iPhone 15 will allow you to significantly experience the performance difference, and it offers high cost-effectiveness.

• Those who always want to use the latest model: With changes in the latest chip, camera performance, battery, and design, you will likely be highly satisfied.

• Those looking for a thin and light iPhone: The iPhone 17 Air is the only choice. The iPhone 17 Air is among the thinnest and lightest ever, ideal for those who prioritize ease of holding.

Those who should consider other options:

If any of the following apply to you, consider other iPhone models in addition to the iPhone 17.

• Those who want to buy an iPhone cheaply: If you don't have a strong preference for the latest features and want an affordable iPhone, consider the iPhone 16 or iPhone 15.

• Those who prioritize cost-effectiveness and want to get a good deal: When new models are released, older models often drop in price. For those who prioritize cost-effectiveness, consider older models like the iPhone 16 or iPhone 15.

If the above applies to you, also consider a used iPhone. With the release of the iPhone 17, high-quality used models like the iPhone 16 and iPhone 15 may become available at more affordable prices.

[Click here for a list of iPhone 15 series products]

[Click here for a list of iPhone 16 series products]

When purchasing a used iPhone, it is important to buy from a trustworthy shop. Please refer to the following articles as well.

[What is a reliable store for smartphone purchases? Choosing a safe, secure, and trustworthy store and the appeal of PRODIG]

[Where to buy a used iPhone? Recommended stores and precautions for purchase explained]

[Summary] If you want the latest model, upgrading to iPhone 17 is a good option!

The iPhone 17 series has undergone significant evolution, including the introduction of the Air model and increased battery capacity in the Pro Max model. With new models released every year, it is crucial to determine "which one is right for me" and "should I upgrade now."

For those seeking the latest performance or using a 2-year upgrade plan, the iPhone 17 series is an attractive option. Let's wait for future updates to make a decision.

On the other hand, if you "want an iPhone at a lower price" or "don't care much about performance," consider used or unused iPhone 15 or iPhone 16 models.

Prices will drop with the release of new models, so good condition iPhones can be acquired at an affordable price.

For those who are fine with an older model or want to get a good deal, it is recommended to use a trusted used retailer to purchase an iPhone 15 or iPhone 16.

[Click here for a list of iPhone 15 series products]

[Click here for a list of iPhone 16 series products]

When purchasing a used iPhone, it is important to buy from a trustworthy shop. Please refer to the following articles as well.

[What is a reliable store for smartphone purchases? Choosing a safe, secure, and trustworthy store and the appeal of PRODIG]

[Where to buy a used iPhone? A comprehensive guide to safe and affordable choices]