As Apple’s fall conference in 2025 officially enters the final countdown stage, the highly anticipated iPhone 17 series will be announced soon. This year, the new iPhone 17 Pro series will not only undergo major changes in appearance design, but Apple will also launch a new iPhone 17 Air ultra-thin model. Still many netizens are curious about asking? Is the iPhone 17 worth buying this year? Or is it better to wait for the iPhone 18 to buy it? The Internet has once again sparked a wave of discussions on odd and even purchase memes.
The evolution design of Apple’s early iPhone odd and even unspoken rules
Regarding the saying on the Internet that “do not buy an iPhone odd number, and only an iPhone even number is worth buying”, it is completely a false myth. “Mr. Crazy” has long observed that Apple has some rules for iPhone, which usually uses design, performance and fine modification to loop.
Apple’s earliest adjustments to the development of iPhone product strategies. At that time, Jabbers changed with the dual-track rhythm of “big appearance change” and “internal refinement year”. The most obvious was the rotation adjustment of numbers and “S” to enhance the processor, camera and experience. However, the appearance of the iPhone continued to the previous generation, which also formed a reference for psychological expectations for “big changes” and “small changes” and the change cycle.

For example, the most obvious difference between the iPhone 4 and iPhone 4S is the stronger processor and GPU, which improves camera pixels, capacity, improves Bluetooth and adds Siri voice assistant functions.
The iPhone 6 began to use a large screen, and also created a new design for curved metal frames. The next year, the iPhone 6s mainly strengthened the original design, and instead adopted more powerful processor performance, memory, lens and imported second-generation Touch ID fingerprint recognition, which also made the iPhone 6s one of the highly praised magical machines to this day.
The above product strategy improvements have also caused many people to mistakenly think that if the iPhone buys doubles and no orders, it has not been possible to buy the iPhone. Since Cook took over Apple, the “S” naming rules have long disappeared from the iPhone 11 model, and the internal rhythm of the iPhone products has been changed to “design improvement”, “performance improvement” and unfixed “enhanced models” cycles.
Is the iPhone 17 worth buying? Show you the evolution table of the past generations
Since Apple first imported full screen and Face ID face recognition for iPhone X, many problems have occurred. Until the launch of iPhone XS the next year, the original design defects have been completely strengthened, and the performance and battery life of the 7nm process have also been enhanced at the same time. Immediately after the iPhone 11 Pro continues to strengthen its performance and hardware specifications, and it has also begun to form three cycles of irregular design, performance and enhancement.
However, after the first introduction of Face ID dynamic island on iPhone 14 Pro, the next year, the iPhone 15 Pro mainly strengthened its performance. The first one adopts TSMC’s 3-nanometer process and uses titanium material, but it was revealed that it lacked heat dissipation. It was not until the iPhone 16 Pro series that the heat dissipation design was solved, and the size of the Face ID module was reduced, and even the edge of the screen was narrowed at the same time, becoming the most perfect product of this generation.

Immediately afterwards, the iPhone 17 will bring a thinner body and camera position reconfiguration, and the appearance design has been fully adjusted again. This time, Apple has once again given the iPhone 17 Pro and iPhone 17 Air to be designed first.
However, “Mr. Crazy” expects that immediately after the iPhone folding machine is released in 2026, the iPhone 18 product update cycle will be adjusted again. It is expected that performance priority will be skipped, but instead, it will adopt more radical design and performance changes, hiding Face ID under the screen and retaining only the front lens. At that time, a new look will likely be available, and the iPhone 18 Pro will disrupt the cycle.
Although “single shouldn’t be bought” is already a hot topic in the circle, is the iPhone 17 worth buying? Whether it will be just design-first and lack performance breakthroughs as predicted, perhaps the most rational way is to wait for Apple to officially debut in September before making a choice based on budget and needs.
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