Does iMessage use 3G on an iPhone?

Does iMessage use 3G on an iPhone?

Yep and they don't come out of allowance

IMessaging uses data if thats what you're asking… Having 3G coverage is based on what your provider has for signal strength in the area. If you have 3G coverage then yes, it is using 3G data service

Yes, iMessage does use your 3G data plan unless you are using wi-fi.