Is 3gb enough for IPhone 4 or 5?

So I have the iPhone 4 and I have a 5gb plan right now and it's just to much money. So would 3gb be okay if: I use spotify a lot surf the web download apps? I would be using the Wi-Fi at home a lot and maybe sometimes using the phones Internet when I'm out and about.
Would it work?

Use a app to monitor your usage for a month then decide, to main killers are youtube skype and facetime etc anything that streams video, music isn't as bad depends how much, check how big a app is before downloading

  • Is 500mb data on iPhone 4s contract enough? I'm only going to be on the Twitter, Facebook and Instagram apps really. Should I get 1gb instead?
  • Is 3GB of Data Enough for 2 people on iPhones? Me and my brother are getting iphones. if we do 3GB of data, would that be enough for moth of us mixed together? also, i know about using Wi-Fi when its there, so of course i won't use the GB when there's Wi-Fi. also, is 3GB more than MB? And more than 1gb? Sorry i'm stupid… thanks:-) Its iphone 5 by the way
  • Is 3GB good enough for the iPhone 4? I'm worried that i will go over my data, and i have 3GB data plan… All i do is go on Facebook (app version) Snapchat, and Instagram… Do you think ill go over? This is my first smart phone. And how long should the data last with tose three apps?
  • IPhone says I used up 3GB but how? I bought an iPhone 4 from a guy. Everything works but I realize after downloading like 3 apps on MB it says I used 3GB! I realize the guy was logged in to iCloud so i deleted its data. The search on the iPhone still pops up his iMessages but when i click the app there's no data. What is taking up my storage? I have no data that I know of that I used up other then the three apps. Edit: ugh so long little bird ): I do not want to jailbreak it but 3GB is alot of space taken up.