How to treat spam messages on iphone 6?

Find the spam message you want to block in the message, click the "Details" option in the upper right corner, and click;

Then please click the "More Information" icon in the SMS details interface, as shown in the figure;

Then in the introduction interface, click the option of "Block this calling number", as shown in the following figure;

Finally, click the "Block Contacts" option to block all short messages sent by this number.

Other methods:

Go to Settings-Messages -iMessage of the mobile phone and turn it off.

Delete email contact information: Similarly, go to Settings, enter the "Information" option, and turn on "Send and Receive" to delete email contact information in iMessage contact information, and only keep the mobile phone number.