I am abroad already and trying to download viber, is there a way for me to do so without cell phone service?
You can download it on a PC. You just need to find a website that ahs the download so as to download it. An example of a website to download is at http://www.1mobile.com/viber---free-calls--messages-79869.html or mobile.brothersoft.com.
Or u can use wifi Internet