https://community.o2.co.uk/t5/Tech-Support/Sms/m-p/1563002#M23240 <P><a href="https://community.o2.co.uk/t5/user/viewprofilepage/user-id/4883952">@Cotonou</a>&nbsp;</P><P>Known issue on iPhones as there was a change to iOS15 that meant it couldn't read the way O2 diagnses delivery reports.</P><P>If you start all your sms messages with *0# you will get a delivery report from O2 and you just need to ignore what the phone says.</P> Fri, 22 Jul 2022 11:02:03 GMT MI5 2022-07-22T11:02:03Z https://community.o2.co.uk/t5/Tech-Support/Sms/m-p/1562978#M23238 <P>When I send a sms message it says not delivered but the message is delivered</P> Fri, 22 Jul 2022 08:50:06 GMT https://community.o2.co.uk/t5/Tech-Support/Sms/m-p/1562978#M23238 Cotonou 2022-07-22T08:50:06Z https://community.o2.co.uk/t5/Tech-Support/Sms/m-p/1563002#M23240 <P><a href="https://community.o2.co.uk/t5/user/viewprofilepage/user-id/4883952">@Cotonou</a>&nbsp;</P><P>Known issue on iPhones as there was a change to iOS15 that meant it couldn't read the way O2 diagnses delivery reports.</P><P>If you start all your sms messages with *0# you will get a delivery report from O2 and you just need to ignore what the phone says.</P> Fri, 22 Jul 2022 11:02:03 GMT https://community.o2.co.uk/t5/Tech-Support/Sms/m-p/1563002#M23240 MI5 2022-07-22T11:02:03Z