Any way to find all friends who have iMessage?

i want add them contacts list can't think of way easily

has figured out way? don't want go through friends , create text them , wait see if turns blue

 

if have texted friends before , have record of past msgs, should text msg or imessage in chat bubble next send bubble....

 

Forums iPhone, iPad, and iPod Touch iOS Older iOS Versions iOS 5 and earlier

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