Why are there so many unfamiliar numbers in my mobile address book?

1. Malware: If there is malware in the mobile phone, these malware can automatically collect your contacts and other important data information into the built-in database, etc., so that strange people may appear. Information such as phone calls, emails, and text messages appear in your phone's address book.

2. Because now is an information age, the most important thing for businesses in this era is to master customer information, so this is the market demand, and once there is market demand, there will be Criminals collect other people's information and then sell it, so a lot of people's information is leaked.

3. The reason why the mobile phone often receives strange calls from other provinces may be that personal information has been leaked. If this happens, it is most likely because your personal information has been leaked. It is recommended that you do not answer or call back unknown numbers, and keep your personal information safe.

4. Data information is synchronized randomly, resulting in confusion of device information. Is this synchronization function enabled on both Apple phones, so the address book is confused? The account ID is also logged in on other phones, so the address book of that phone will appear in your phone.

5. A lot of unknown contacts suddenly appeared in the iPhone address book. This may be due to the public ID account causing the address book to be synchronized. The solution is as follows: Generally, if a strange number appears, when you click on the address book, it will look like this. Sometimes there are many numbers, and we don’t know where they came from.