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.
You can block someone using the Instagram app on your phone or tablet, but not on the web. When you block someone, they can't see your profile or posts. People aren't notified when you block them. To block or unblock someone: 1  Tap their username to open their profile.2  Tap (iPhone/iPad), (Android) or (Windows). 3  Tap Block User.hen you block someone, they can't see your profile or posts. People aren't notified when you block them. To block or unblock someone: 1  Tap their username to open their profile. 2  Tap (iPhone/iPad), (Android) or (Windows).