Is 150 MB / month enough for limited use? I've been thinking about getting a pre-owned Samsung Fascinate from Verizon for $40. I can't afford a $30/month unlimited data plan, but I was considering the $15/month 150MB data plan.

I'm planning on using it primarily as a phone/PMP, without heavy use of internet-related features. Most of my data usage will probably come from these things:


Downloading apps
Occassionally checking weather, maps, etc.
Texting through Google Voice. I plan all cancelling my texting plan and moving all my texting activities to Google Voice. I only use around ~300 texts (sent and received) per month.


Is it reasonable to expect these activities to remain within 150MB/month? On a related note, I am usually on my university's campus, which has wi-fi. Can I use the wi-fi network to avoid suffering data charges?

Update: Verizon ran a promotion this weekend. For upgrading to a smartphone with unlimited data plan, you got a $10/month credit for the next 24 months. So the $30/unlimited data plan effectively becomes $20/unlimited, and I went with that instead of the $15/150MB plan.
Using wifi == not using your data plan.  So that will help reduce data usage from your provider.

So long as you are not streaming (music/video/youtube/etc) or downloading large amounts of data (podcasts, for example) then you should be fine.  Or at least save those activities for when you are on wifi.

Downloading apps: each app can be anywhere from 100kb to 10mb+ in size.  Save these for your wifi unless it is an update you really need then and there.

Weather/maps: shouldn't be too heavy of data.  Same with Google voice.