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.
If you have blocking on your line, the phone company you are dialing into knows your number but will not share it with the person you are calling. If you have blocking and you call someone who subscribes to Caller ID, he or she will see the message âPrivate,â âP,â or âAnonymousâ instead of your phone number.he two blocking options are: 1  Per-Call Blocking. ( 2 Also known in some states as Selective Blocking.) To block your phone number or name from appearing on a recipientâs Caller ID unit on a single phone call, dial *67 before dialing the phone number. 3  Your number ordinarily will not be sent to the other party.