On iPhone, can I tell if group text messages were delivered? The question is in the subject.  Iphone 6 plus - ios 8.  I know I can tell for individuals, but not for groups - or at least not obviously.

Can I?
You are correct, there are no delivery or read receipts for group messages (regardless of the size). Even when all participants are using iMessage, it will not display either receipt.



Note: Whatsapp does provide for this. Tap and hold a message. Tap "info". At the bottom, it will show who read the message.