on 12-01-2024 09:51
on 12-01-2024 09:56
Only help I know of is here @Schos
Guide: Text Message Tips (not sent or received)
on 12-01-2024 11:21
If you have an iPhone it's normal as O2 don't support delivery reports.
Start all your sms messages with *0# to get an accurate status and ignore the phone.