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Hello everyone, Lin Fei to answer the above questions, 4sios9 streamlined system, 4sios9 many people do not know, now let's take a look!

Nowadays, many people choose powerful iPhones in order to keep their smartphones for a few more years. At that time, Apple's 4s smartphone was very popular. In order to give people a very good experience, Apple will upgrade its system regularly. Many people upgrade their mobile phone system to make their mobile phone use more smoothly. Apple's iOS9 system is very excellent, so Benshaw will tell you how to upgrade iphone4s's ios9 system.

Iphone4s upgrade ios9

Preparatory work / about to start work

Because iOS9 beta is a preview of development, the iOS9 upgrade firmware file cannot be obtained through system updates. The way to download iOS9 is to log in to the developer's account to find the download address.

Although the upgrade package is compressed to 1.3GB, you still need to download the software to speed up.

Due to the instability of the development version, unknown errors may occur. It is recommended that you back up your phone to your computer before upgrading iOS9. If something goes wrong, you can restore it with the system.

The method of upgrading iOS9 by Iphone4s

All the above preparatory work has been completed. Keep your phone connected to your computer, hold down the shift key and click "restore".

Instead of browsing the backup file of the phone, this restore browses to select the upgraded firmware of iOS9.

The option indicates that "restore" will erase all data on the phone. Click "restore" to proceed to the next step.

The firmware version needs to be downloaded. Download the firmware to match the phone model, otherwise there will be a mismatch and the system upgrade will fail.

After the firmware brushed in meets the model requirements, verify the firmware online. After verification, the firmware is brushed into the phone. During this period, the phone can be restarted about three times to complete the system upgrade.

Iphone4s configuration

IPhone 4s has made great improvements in hardware and software, and the biggest highlight lies in the new siri intelligent voice assistant and iCloud cloud service. In terms of hardware, it is equipped with an Apple A5 dual-core processor, a 3.5in IPS glass hard screen on the front, a resolution of 960640 pixels and a 8 million pixel backlighting lens.

Iphone4s battery life

IPhone 4S: 8 hours of 3G calls, 14 hours of 2G calls, 6 hours of 3G continuous data transmission, 9 hours of WiFi data transmission, 40 hours of music playback, 10 hours of movie playback and 200 hours of standby time.

Iphone4s camera

The iPhone 4S is equipped with a 8 million pixel backlit camera with a 73% increase in light transmission and a maximum aperture of F2.4, which can capture 32642448 pixel images. Combined with the enhancement of iOS's photography function, the photo effect is comparable to that of an ordinary card machine, and the iPhone 4 has previously been the most popular camera device on Flickr. In addition, the iPhone 4S camera also supports recording 1080p HD video, and has a picture stabilization system and real-time noise reduction.

Nowadays, smartphones are so popular that almost everyone has a smartphone. In addition, in just a few years, many smartphone brands have emerged, which enables people to buy the smartphones they like. Although there are so many smartphones on the market, most of them use Android's open operating system, which will lead to stutter problems if they are used for a long time, but the iphone4s launched by Bian Shaw will not have this problem.

At the end of this article, I hope it will be helpful to you.

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