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.
Choose when to block your phone number. Prevent your cell phone number and information from being collected by blocking your phone number. Allow family and friends to identify your calls by adding a prefix to their numbers in your contacts.by Dennis O'Reilly /.-Mobile's Blocking Anonymous Callers page refers you to the instructions that came with your phone, or suggests that you call the company's support number. It's a hassle to enter the unblock prefix for family, friends, and business associates one contact number at a time.