在2016年9月，苹果公司发布了其新一代智能手机——iPhone 7。这个版本的iPhone引起了广泛的关注，因为它不仅拥有更强大的性能，还带来了几项关键的设计和功能上的变化。与此同时，苹果也继续销售了之前的一款旗舰机型——iPhone 6S。尽管两者都是高端智能手机，但它们在许多方面存在显著差异。

首先，我们来看看外观设计。在 iPhone 7 中，苹果公司采用了一种全新的水波纹铝合金材料，这种材质比传统的铝金属更加坚固且具有更好的抗刮擦能力。此外，IP67级防尘防水标准意味着 iPhone 7 可以在一定程度上抵御汗水、雨水和沙子等环境因素。这对那些经常出门或工作环境恶劣的人来说是一个重要的改进。而相比之下，iPhone 6S 的设计较为传统，没有这些现代化特性。

其次，在处理器方面,iPhone 7 配备的是A10 Fusion四核处理器，而 iPhone 6S 则搭载的是A9双核处理器。这意味着 iPhone 7 拥有更快的速度以及更好的多任务处理能力，使得游戏体验更加流畅，并且能够支持更多复杂应用程序。此外,A10 Fusion 还提供了增强型图形架构，这对于爱好者来说无疑是好消息。

摄像头也是一个重要不同点。虽然两款设备都配备了一颗12MP后置摄像头，但是在前置摄像头上,iPhone 7 提供了所谓“Live Photos”功能，即可以捕捉视频片段并将其融入到静态照片中，让图片变得生动起来。而在 selfie 摄影领域，iPhonesince the release of the front-facing camera on the original iPhone have always been popular for taking high-quality selfies, and this trend continues with the addition of features like Retina Flash, which uses the screen as a flash to illuminate your face in low-light conditions.

音频系统也有所提升。在 iPhoneseven, Apple has replaced its traditional headphone jack with Lightning connector-based EarPods. Although some users might find this change inconvenient, it allows for improved audio quality through AirPods or other wireless headphones. Additionally, both devices feature stereo speakers that deliver more immersive sound experiences than their predecessors.

Storage capacity is another area where these two iPhones differ. The base model of iPhone SE starts at just16GB of storage space while all models of iPhone come with either32GB or128GB built-in memory options. This means that if you need more storage space for apps and media files on your device, you'll have more flexibility when choosing an iPhonenine over an iPhoneseven.

Lastly, consider battery life. While neither device offers removable batteries (as was typical before), the iPhonenine generally lasts longer between charges than does its predecessor due to improvements in power efficiency made by Apple's engineers.

In conclusion, there are several significant differences between iPhonesix and seven beyond their cosmetic changes in design and color choices. These include advancements in processing speed and graphics capabilities provided by A10 Fusion chipsets; enhanced camera functionality including Live Photos capability; replacement of traditional headphone jacks; increased storage capacity options; better audio quality through Lightning-based EarPods or wireless headphones; extended battery life compared to previous generations' phones like sixes'. If you're looking to upgrade from a lower-end model but want access to cutting-edge technology without breaking bank then considering buying an used/refurbished one would be best option otherwise go directly towards purchasing new one since newer generation smartphones will keep getting better every year so investing now will give you most benefits later down road!