500mb internet data on a phone...

[Neenee]

.how many hours on average usage would i get from this amount a month?

[squarebear]

Depends what you are using the net for.

Downloading songs? You'll get about 120ish.
Watching video? Maybe about 50ish youtube videos.
General surfing? Should last you a good few days.

[Neenee]

if we were just surfing the next like facebook every so often, and watching the odd vid on ou tube and general searching for stuff on google... would we get usage from it each month?