Unlimited 3g data on T-Mobile's 2.5 gb plan?

I have an iPhone 4 that was factory unlocked from AT&T to be used with my current Tmobile plan, which is 2.5gb of 4g data. The iPhone only has 3g speeds and it uses up my 2.5gb of 4g still. But after I use up all of it, I'm still on 3g- nothing's changed. Would it be smart to downgrade to tmobile's 500mb plan instead?

You might as well switch to 500MB since you can't get 4G on your phone.

  • Will I get charged for using 3G Internet if I have the unlimited data plan? My carrier is Sprint. I have an iPhone 4. I'm asking if I'll be charged if I don't use Wi-Fi.
  • What's the data limit for Straight Talk's Unlimited plan? I'm probably going to buy the unlocked GSM iPhone 5 and then use it on Straight Talk. However, has Straight Talk said how much data you can use before your data speeds start getting throttled? Also, will the data that I use while I'm on Wi-Fi count against that data limit?
  • What can I do to keep my unlimited data plan on Verizon and upgrade to the iPhone 5? Now I already know that I can buy one full price from Verizon for about $649 but I don't want to go that route, and I don't want to buy a subsidized iPhone 5 and end up losing my unlimited data plan. Would I be able to just wait and buy a used iPhone 5 after it comes out and then have them activate the phone on my account? They wouldn't be able to take away my unlimited data would they?
  • Verizon Unlimited Data Plan- Iphone 4S? I've seen a lot of answers about paying full price for IPhone 5 to keep your unlimited data plan. I have a 4 and I'm eligible for an upgrade now. Does anyone know if I choose to get the 4S (instead of the 5) if I can keep the plan? And would it be full price or upgrade price?