How does Apple return to ios9 from ios 10?

1. Download the degraded firmware of the corresponding model and back up the data.

At the laser lettering on the back of the machine, we can find the model of the machine after the "model" or "model".

The model number can be found in the laser engraving on the back of the machine.

2. After confirming the model, we can download the corresponding model of iOS 9.3.2 firmware, and connect the mobile phone with the computer with the data cable.

3. After the 3.iPhone connects to iTunes, it is best to back up the data first, because the operation of brushing back will empty all the contents in the phone.

4. After the backup is completed, also in the summary interface of iPhone, hold down the Shift key (option key on MAC) and click to check the update. In the pop-up dialog box, find the location of the previously downloaded iOS 9.3.2 firmware, select the brush file, and the process of restoring to iOS 9 begins.

5, wait a little patiently, keep connected, and a stable iOS 9 will be fine in a short time.

Power saving skills of mobile phone

1, pay attention to the signal strength.

If you are in a place where the signal is not good, you can consider temporarily switching to flight mode to prevent the iPhone from constantly searching for weak signals.

2. Close the useless notification center application.

Go to "Settings" and "Notification Center" and turn it off. Don't forget to turn off the sound reminder and icon tag.

3. Change the display settings

The display screen is also a big power consumer, so it should be turned off quickly when not in use. Enter Settings, General and Auto Lock Screen to adjust the auto lock time to a relatively short range.

4. Disable animation effects

Select a still picture as wallpaper in the settings of "Wallpaper and Brightness", and turn off the animation effect in "General" and "Accessibility".

5. Reduce application background refresh.

People like to switch back and forth between different applications, but do you know that running too many applications in the background is also very power-consuming? You can turn off background refresh for most applications in settings.