HS code utilization in trade feasibility studies

iPhone4 and HS code utilization in trade feasibility studies4s: Comparison of the new and old generations iPhone4 and 4s are two smartphones launched by Apple in 2010 and 2011. They were both the most advanced mobile phone products at that time and were favored by consumers around the world. Among many iPhone models, these two mobile phones are also a generation that has attracted much attention. However, due to the short time of launch, many people are not very clear about their differences and advantages and disadvantages. Therefore, this article will make a detailed comparison of iPhone4 and 4s. First of all, in terms of appearance, iPhone4 and 4s are basically the same. They use the same glass body and stainless steel frame, and both use a 3.5-inch Retina display with a resolution of 640x960.However, because 4s uses better materials, its weight is lighter than 4. In addition, there is only a slight change in the appearance of the 4s. The most obvious change is that the number of sky lines on the fuselage has changed from 4 to 2, which makes it look more concise and avoids the signal drop caused by the coverage of the antenna. Hardware configuration The hardware configuration gap between iPhone4 and 4s is relatively large. 4 adopts the latest A4 processor at that time, while 4s adopts a more powerful A5 processor, which is also Apple's self-developed processor. The A5 processor is about twice as good as the A4 processor in performance, and has better battery life and faster graphics performance. 4s also adds the Siri voice assistant function, which is Apple's own artificial intelligence system, which can accept voice commands and provide various services and information.Camera and image functions. In terms of photography technology, the cameras of 4s and 4s are 5 million pixels, but the cameras of 4s adopt better sensor technology and optical systems, so it performs relatively better. In addition, the 4s also comes with an additional lens for wider-angle shooting. 4s also supports 1080p HD recording, while 4 can only record up to 720p. In general, the camera and image functions of 4s are more powerful than 4, which is suitable for users with higher requirements for photography. The running system iPhone 4 and 4s were both running iOS 4 operating systems when they were first launched, but 4s can later be upgraded to iOS 9, while 4 can only be upgraded to iOS 7. Because iOS 9 has many improvements in security and experience compared with iOS 7, users who use 4s will have a relatively better user experience.For users of 4, because it can no longer be updated to the latest iOS system, there may be some security hazards or incomplete problems during use. According to the comprehensive evaluation, iPhone4 and 4s are both very good smartphones, but 4s is more powerful in terms of hardware and software. If you need faster processing speed, better imaging function and better system update experience, then 4s is a choice worth considering. And if you don't have too many requirements for these aspects, or just want to be more comfortable in daily use, then 4 is still a good choice. However, no matter which mobile phone you choose, you should pay attention to the usage time, because they are already old versions of mobile phones, and the service life may be relatively short.

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