Delivery reports (DLR) usually take 24 hours to be updated.
It is worth mentioning that after Kuwait implemented mobile number portability (MNP) the delivery reports will not be accurate.
So they are not to be relied on to measure SMS campaign effectiveness or link open rate.
+ How long is Arabic/English SMS message?
+ When I send SMS, will my mobile number be shown?
+ Can I Send Link (or URL) in SMS messages?