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.
Add a contact or phone number to your blocked list. You can add someone to your blocked list from the Phone, FaceTime, Contacts, or Messages app: 1  Tap next to the contact or phone number that you want to block.2  If you're in Messages, open the conversation and tap Details, then tap. 3  Scroll to the bottom of the Info screen and tap Block this Caller. 4  Tap Block Contact.dd a contact or phone number to your blocked list. You can add someone to your blocked list from the Phone, FaceTime, Contacts, or Messages app: 1  Tap next to the contact or phone number that you want to block.