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.
To allow incoming text or picture messages (SMS or MMS) from a number you blocked, follow these steps: Using a text or picture message from the blocked number. 1  From any Home screen, tap Messaging. 2  Touch and hold on the conversation thread from the number you want to block. 3  Tap Remove from spam numbers.