It is good to stay in contact with the person you are in the relationship with but I think to much "mobile chatting" is bad and takes away from the relationship. Now days there is no human to human contact which is needed for a relationship to thrive.
Yes
Skype is a good software for video chatting. You can video chat on Skype for free on your mobile device, laptop or computer.
FaceBook mobile doesn't provide for chatting. You can send and receive messages the same way you do on a computer.
The Droid or the Black Berry from Verizon.
It is not necessary to be online while chatting, I chat to my neighbour over the garden fence and neither of us need to be online to do this.
Chatting, texting through mobile phone or a device which applicable for instant messaging
You can't unless you are chatting with them. That is the only conversations you will see, the ones between you and them.
how about trying video chatting or communicating on the telephone
By pressing :D
From a mobile number, highly illegal. On a chatting app ( omegle, Skype, etc). It's not
It means "Thats All Fine" used while Chatting.
Ask her and see