How to block a cell no
You can block any number on your iPhone by just installing an app called "iBlacklist"
In the app you have many options, and with them there's an option of blocking a cellphone number.
You
go to Blacklists - General BL. There you have '+' in upper right
corner. From there you can add the number you want from contacts, recent
calls and messages or write it yourself.
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