Can I still downgrade after upgrading to iOS 17.4? Does iOS 17.3.1 turn off verification?

php editor Baicao brings you the latest iOS system upgrade information. Can I still downgrade after upgrading to iOS 17.4? Does iOS 17.3.1 turn off verification? These issues are of great concern. In today's world of frequent mobile device system updates, understanding this information is crucial. Let us stay up to date and provide you with comprehensive guidance and advice.

Many users (especially users of older models) have reported that iOS 17.4 consumes too much power too quickly. Before this, if you feel that iOS 17.4 consumes too much battery, you can still downgrade back to iOS 17.3. 1 version, but not anymore!

Apple issued an announcement today, announcing that it would stop signing iOS 17.3.1 updates, which means that users who have upgraded to iOS 17.4 cannot downgrade to iOS 17.3.1.

After a new version is released, Apple typically prevents users from installing older versions of iOS to encourage customers to keep their operating system up to date and prevent downgrading to older, more secure versions. A less robust version of the iPhone operating system.

Apple released the iOS 17.3.1 update on February 9. The update is not significant. The official log states that this update focuses on fixing the issue where text may be accidentally copied or overlapped during typing on the iPhone. question. In the early morning of March 6, Apple pushed iOS 17.4 to everyone, which mainly introduced new Emoji and adjusted App Store, Safari, etc. for the European market. This is currently the only iOS version that supports signing. Now that it has been a week since the release of iOS 17.4, it is time for Apple to routinely turn off verification of old versions.

It stands to reason that iOS 17.4 will definitely be better to use than iOS 17.3.1, and it will not have the problem of too fast power consumption. After all, the system will definitely be improved as it is upgraded.

Currently, users who encounter the problem of excessive battery consumption when upgrading to iOS 17.4 can only endure it for now. According to log records from the MacRumors website this week, Apple seems to be internally testing the iOS 17.4.1 update for iPhone. It's unclear when exactly iOS 17.4.1 will be released, but judging from its appearance on MacRumors, it could be this week or next week.

Apple is currently testing iOS 17.5 internally, and this version is expected to be available for beta testing to users soon.

In addition, you can also make the following settings to extend the battery life:

1: Turn off real-time activities

Real-time activities can allow applications to be on the lock screen Or dynamic island real-time update notifications, especially in iOS 17, real-time activities are used more frequently than before. Coupled with the always-on screen function of iPhone 14 Pro and iPhone 15 Pro models, power consumption increases significantly. Open Settings - Face ID & Passcode, enter the lock screen password and then scroll down. Under the Allow access while locked column, turn off the switch next to Live Activity.

2: Delete lock screen and home screen widgets

Apple has introduced interactivity in iOS 17, and you can perform some operations directly on the lock screen interface without opening the software. Therefore, it is recommended to delete unnecessary widgets to save power.

Three: Turn off real-time voicemail

Real-time voicemail can transcribe the caller’s voice message in near real-time. Since this function is displayed directly on the lock screen, it is best if you want battery life. Turn off this feature. Just open Settings-Phone-Live Voicemail and turn off the switch.

Four: Turn off close-range AirDrop

When two iPhones with iOS 17 system are relatively close, the AirDrop transmission protocol based on close range will be activated. If this function is continuously triggered, , the battery will run out quickly. It is best to go to Settings-General-AirDrop and then turn off the function.

5: Disable tactile feedback

This function will provide vibration feedback when using the keyboard, and will also increase battery consumption. This feature can be turned off in Settings - Sound & Touch - Keyboard Feedback.

6: Turn off the always-on display (applicable to iPhone 15 Pro)

As the name suggests, the always-on display can display information such as time and notifications on the screen after locking the screen. Although the refresh rate is only 1Hz, it will still increase power consumption. The method to turn it off is Settings-Display & Brightness-Always Display and then turn it off.

Seven: Use static wallpapers

There is no doubt that animated wallpapers will consume more power than static wallpapers, so if you want your phone to last longer, it is best to choose static wallpapers. wallpaper.

Eight: Use focus mode

The iPhone’s focus mode can significantly reduce the number of notifications received. Fewer notifications mean fewer times the screen is lit. At the same time, the focus mode can also set which applications can send notifications and when, thus avoiding unnecessary notifications and not missing important messages. Just open Settings-Focus Mode and customize your own settings.

9: Limit the time and frequency of an application’s access to location information

Restricting an application’s background positioning permissions can also extend battery life. You can customize application permissions through Settings-Privacy and Security-Location Services. .

10: Restrict apps from using Bluetooth

In addition to location information, restricting apps’ Bluetooth permissions can also extend iPhone battery life. Open Settings-Privacy and Security-Bluetooth to customize Bluetooth permissions.

11: Turn on low power mode

There is no need for too many manual settings. Low power mode is the most obvious way to improve battery life. This feature can be turned on in the Control Center, Settings - Battery, or directly through Siri. You can also set the battery to automatically turn on at a specific power level.

Twelve: Manage high power-consuming applications

Open Settings-Battery to see battery usage statistics. Here you can see which software consumes more power. You can uninstall the ones you don't need very much, and you can limit background activities if you really need them.

13: Limit background activities

Even if many applications are not opened, they will be refreshed in the background, so limiting background activities is also very useful to improve battery life. It can be managed in Settings-General-Background App Refresh.

Fourteen: Lower the screen brightness

This is a very useful method, but it may reduce the user experience. It is recommended not to play with the phone under the sun.

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