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.
How to Find and Block Someone from Texting You on Your iPhone. To block the number of someone who is texting you on your iPhone, go into your text messages (iMessage) app. Find a message from them, and click on it. Once in the message, click on âDetailsâ in the upper right-hand corner.