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.
Visit Call & Message Blocking and enter a Phone Number of the individual who is texting you. If the text is originating from an email address or web domain, then visit Internet Spam Blocking and enter the email or domain to be blocked. You will no longer receive texts from the Phone Number, email address, or web domain.