How does Apple's mobile phone block spam messages?

Take the Apple iPhone as an example. In the case of jailbreak, iPhone can block spam messages with the help of some third-party plug-ins or applications. Here's how to block spam messages without jailbreaking. Tools/raw materials iPhone methods/steps First, open the iPhone address book, as shown in the figure: create a business card named "Spam SMS" in the address book, as shown in the figure: then slide your finger upward to find "SMS ringtone and vibration", and change the sound and vibration of SMS reminder to "None" respectively. After the change is completed, click the blue "Finish" button in the upper right corner of the screen, as shown in the figure: After creating the business card of spam messages, the next thing we need to do is to add the numbers of these spam messages in the mobile phone to the business card. Find and click "Add Contact" at the top of the message, as shown. Then click "Add to Existing Contacts", as shown in the figure. Find the business card we created for spam messages in the address book, click Add, and then click the blue "Finish" button in the upper right corner, as shown in the figure. After this method is set up, all the numbers that often send us spam messages will be added to this business card. Although this method is a bit clumsy, it can't completely block spam messages, but at least it can block the sound and vibration that often send us advertising messages. Relatively speaking, it can reduce some voice pollution and save some electricity.

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