1. Install third-party software first. Take PP assistant as an example here. First, connect the iPhone to the computer with the original data cable, open the PP assistant, click the iPhone column on the left, and you will see the relevant information of the machine in the pane on the right. You can see whether the jailbreak column shows "Yes";

2. Next, please click on the "Library" column on the left;

3. In the library on the right, click the "Add" button above;

4. Then in the file selection box, select the ipa file we want to install on the iPhone;

5. After adding the ipa file to the PP assistant's library, please click the "Install" button to install the file on the iPhone.

From the moment you turn on the device, iOS can provide you with built-in security. IOS specially designed the underlying hardware and firmware functions to prevent malicious software and viruses. At the same time, it also designed high-level OS functions to help ensure the security when accessing personal information and company data. To protect your privacy, applications that get location information from calendars, address books, reminders and photos must first get your permission.

You can set a password lock to prevent unauthorized access to your device, and configure it to allow the device to delete all data after multiple failed password entries. The password will also automatically encrypt and protect your stored email and allow third-party applications to encrypt their stored data.

IOS supports encrypted network communication, and app can use encrypted network communication to protect sensitive information during transmission. If your device is lost or stolen, you can use the Find My iPhone function to locate the device on the map and remotely erase all data. Once your iPhone is restored, you can also restore all the data backed up last time.