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Why does my Apple phone display sorry QQ signature error?
The signature error is that someone has modified the file. Find the unmodified download and installation again.

You can download it again in the app store.

Download apps and games using the App Store.

You can purchase and download the App Store iPhone, iPad, iPod touch, Apple TV or Mac, and download the previously purchased products again.

With the App Store, you can download new applications for iOS devices, Macs or Apple TV.

Browse and buy

Learn more about applications.

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Browse and buy

You need an Apple ID to download and purchase apps from the App Store. Your Apple ID is the account you use to access various Apple services. If you have used other Apple services such as iCloud, please log in to the App Store with the same Apple ID. If you don't have an Apple ID, you can create one.

You can be here. iPhone、iPad、iPod touch、Mac? Or? Apple TV? Browse and purchase applications in the App Store on.

If you see an app next to it in the App Store on any device? , indicating that you have purchased or downloaded the application. If you click or click? , this application will be downloaded to your device again at no cost to you. You can also see the purchased applications on the Updates or Purchased Items tab.

Learn about the payment methods available when purchasing apps and other content. When you download a free application, you can also create an Apple ID without providing a payment method.

You can buy Apple TV apps on your iPhone, iPad or iPod touch. If you turn on the automatic download function, the application will be automatically downloaded and installed on the Apple TV. If you don't turn on the automatic download function, you can download any application you bought for tvOS under "Purchased Items" in the tvOS App Store on Apple TV.

On iPhone, iPad or iPod touch.

Open the App Store on iPhone, iPad or iPod touch to browse applications.

Click "Today" to view featured reports and applications.

Tap Games or Apps to view newly released content, leaderboards or browse by category.

Tap Search to find apps using keywords.

When you find the required application, download it to your device:

Tap an app to view the app's product page.

To get a free application, click Get.

To purchase an application, click on the displayed price.

You may need to authenticate your Apple ID to complete the download or purchase. This may mean entering your password, or using? Touch ID? Or face ID (if you set touch ID or face ID).

After downloading the application, you can move it to another location on the home screen.

Some applications support the purchase of other content in the application. If you set up Home * * *, you can use Ask Before Buying to help control app downloads and in-app purchases. Learn more about in-app purchases.