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.
To do this, call your phone provider and ask for customer service. Then ask to have your line completely blocked, inaccessible to all. This is called a âline block.â The number to call from your cell phone for a line block in the U.S. is 611. In the event that you would like to allow a certain recipient to view your phone number, even though you have requested a line block, you need to dial *82 and then the number youâre calling.