Have you ever been asked, or ever wondered, âIs refrigerant, especially R-134a, heavier than air?â. Just this week I was asked this very question. Thinking I knew the answer right away, I was able to contain my natural, blurt-it-out style of an answer, at least until now.
Add a Contact to the Blocked List. Block someone from calling or texting you one of two ways: 1  To block someone who has been added to your phone's Contacts, go to. 2  The All Contacts window will appear where you can scroll through names to then tap the name of the contact you'd like to block.
Joined: Nov 21, 2010. #1 IOS 7 has a new feature which allows to completely block a number from calling and texting me. I am curious if they get a message which says that they have been blocked, or it just keeps on ringing when they call and no one answers? What happens if they send a text message?