When you install non-Apple App Store software, you will not be able to use it normally because it has not been credited by Apple. But when you are sure that there is no problem with the software, you can choose to grant credit to the software in the settings of your Apple phone so that the software can run normally on your device. It is best not to give credit to software if you are unsure of its origin.

Extended information:

The security certificate is your ID card, or private key, when conducting online transactions. Your security certificate is unique and is the same as any other person’s certificate. Not the same. In order to prevent copying, we do not keep the security certificate when we send it to you, so you must keep your security certificate. When conducting transactions, your transaction instructions are all highly encrypted by security certificates. Even if someone steals them online, he will not be able to know the specific content of the transaction.

The security certificate is encrypted by the top international certification authority (CA for short). The key length varies from 40 to 256 bits, which is called encryption strength. The larger the key length, the more difficult it is to crack. The safer it is.

Reference: Security Certificate-Baidu Encyclopedia