iMessage not working
I have an iPhone 4 and an iPad. I recently moved to Germany and do not have cell service. A friend mentioned iMessage to me, and I immediately began using it. However, on my iPhone, when I try to message someone new; I can't. They have to eniciate the conversation with me. And now when I try to respond to some people I already have an iMessage with it changes from blue to green for SMS, which I obviously cannot do without service. My friend suggested turning iMessage off and then back on. Now it says waiting for activation. Why? My ipad works fine.
iPhone 4, iOS 5.0.1