Before you start blocking SMS spam, you need to be aware that the third-party apps you use to solve this problem will be able to read your messages. If your privacy is very important to you, this could be an issue. Be sure to read the privacy policy of the app and see if the developer appears reliable and has other apps with good reviews as well. Note that this doesn’t affect iMessage in any way, as these apps can only read SMS and MMS messages.
How to Block SMS Spam on iOS
- Download an SMS spam blocking app (SMS Shield,SMS Checker).
- Go to Settings > Messages.
- Under Message Filtering, tap Unknown & Spam.
- Under SMS Filtering, select the spam blocking app you want to use.
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