There are several possible causes of crackling sounds when breathing. For one it might be a symptom of a blockage, or alternatively pneumonia. In the latter case the crackling sound is made by liquid in the lungs.
Getting in touch with Verizon by phone is quick and simple, at least based upon the number of phone contacts listed on the Verizon customer service website. You can choose to use your mobile phone to get information or call from a landline, in some cases. Customer Service: *611 (from mobile phone) or 1-800-922-0204.
New customers must call Verizon at 877-807-4646 and provide personal information, including the phone number of their mobile device. If you already have an account with Verizon when you set up MiFi, sign in to your My Verizon account and activate the MiFi device from there.