Does anyone have any information about communicating with a

Hey @jenjen11814, I believe that the "norm" sort of depends on the location of the deployment, the nature of the mission, and probably the service members rank. I'm not sure about your significant other's case, but it may be that there was some unexpected travel time or they were displaced in an area without much signal. I know that this response is a month late, but I hope that you have been able to talk to your significant other since the date of this post. Although I have yet to experience this issue, I have already been looking into and researching these type of issues just to be prepared. The difficult thing is that it's hard to know how exactly to be prepared for these type of things. Thus, I have found a few articles that you might find helpful.
https://www.military.com/deployment/communicating-with-your-partner-on-deployment.html
http://militaryoneclick.com/is-there-such-thing-as-too-much-communication-during-deployment/

I hope this helps you in some way! Best wishes!