If you need SMS delivery reports on your iPhone, you might have read that the iPhone doesn’t suport them. It doesn’t, unfortunately!
The good news is that there is a workaround! Add *R* and a space to the start of the SMS message (not the number; the message body). While this code will appear in the conversation window, the recipient won’t see it. o2 will strip it out before sending.
When your SMS is delivered, you’ll get a message back which is the raw delivery report. It’ll appear as an SMS in your conversation window.
It’s not an ideal solution, but you do get notification of delivery, at least.
This code also works on Meteor and Tesco Mobile. For a list of codes for networks other than o2 Ireland, see url.ie/2hgg.