The official version of iOS 8 is released. As shown in the following example, a large number of devices are supported. You can upgrade the iPhone 4 S, iPad 2, and iPod touch 5. Compared with Android's messy fragmentation, slow and narrow upgrades, this is also a place that has always been proud.
However, is it true that all devices are suitable for upgrading? At least, the iPhone 4S has to think twice.
Performance is heartbreaking
First of all, the first thought after 4S upgrade to iOS 8 is not amazing, ...... As the saying goes
"Ka Chengxiang"Because the A5 processor is really overwhelmed (the performance is basically only 1/4 of A7), like the iPhone 3GS upgraded from iOS 5 to iOS 6 in the past.
To illustrate the problem, we can compare and test the application startup speed on iOS 7.1.2 and iOS 8 (GM. Use a stopwatch to time the average value of three times, from clicking the icon to entering the start time.
Basically,
IOS 8 will slow your 4S by more than 50%!
The more important thing is that the startup is slow, and the other problem will be more uncomfortable. In fact,
When running iOS 7 in 4S, some freezing occurs, especially when many special effects are not smooth. In iOS 8, the frame dropping of animation effects is even more severe, for example, opening a new tag in Safari or even clicking and sending a text message will make you cry.
In more serious cases, the slow effect slows down the entire machine and the input response slows down.
Similarly, if you have iPad 2 in your hand, we strongly recommend that you ignore iOS 8.
The good news is that after the iPhone 4 was upgraded to iOS 7.1, its performance has improved. Do I have to wait for iOS 8.1?
Lack of functions is more annoying
Due to limited performance, iOS 8 will caster many new features after 4S, for example:
-AirDrop
-TouchID
-Handoff (call transfer okay)
-OpenGL ES 3.0
-Metal API
-ARMv8 64-bit application
Of course, due to hardware restrictions, 5 GHz/802.11ac Wi-Fi and LTE are all different.
The last 3.5 inch screens
4S is Apple's last phone that uses a 3.5 inch screen. It was very large and very small today, and cannot adapt to a large number of applications and settings optimized for the screen, including
Lenovo input, mail sorting, Notification Center widgets, and Spotlight search recommendations.
In fact, the whole is basically usable, but in many places, a lot of display content will be lost, and you need to scroll more screens to see it.
