sometimes when I'm using iMessage with my friend who also has iMessage turned on the message sends as text why is this ?
Does anyone know why sometimes my iMessage sends as text rather than as iMessage ? I use iMessage to chat with my friend in Italy from England. We both keep out settings for iMessage turned on but during our chats occassionally my message turns green and sends as text. This then cost me money because it's an international text. The send button remains blue the whole time I'm writing the message and is blue when I send the message and it stays blue even though the message delievred as a text message. The send button remains blue after the text has sent. Can anyone tell me how to stop this happening ? Thanks
iPhone 4S, iOS 5.1.1