Some spam messages are sent without numbers. On Google it is easy to block them using built in blocker. However iOS just wont block. I have already tried clicking on info (i) and calling back and adding it to Block this caller. It changes to Unblock this Caller, giving the impression that the caller has been blocked. However when I exit and comeback it again goes back to Block this caller option, failing to block in the first place. Is there any trusted or recommended SMS blocker that keeps the messages on the device and filters them on sender or keywords?
