When checking for the times when messages are actually delivered to a user’s mobile phone you cannot rely on the DLR (Delivery Receipt) data as DLRs cannot be used to understand when a message is actually delivered.
Note: In many messaging systems, message status reports or delivery reports (such as “Delivered” or “Read” receipts) are sent based on whether the message was successfully delivered to the recipient’s device, not whether the recipient has seen or acknowledged it. Thus, if the device has received the message, the delivery notification will usually be sent to the sender regardless of the DND (Do Not Disturb) mode.
Although Sinch always endeavours to send all messages as quickly as received, there are several reasons why a message may arrive late on the user’s mobile phone:
Take a look at the Sinch SMS Product page to learn more about our SMS products, or click here to sign up to our self-service portal and get started today.
Learn how to get started with SMS by watching this step-by-step tutorial. The video explains the basics of SMS and shows you how easy it is to send your first message with Sinch:
Sign up to the Sinch Build Dashboard and get started today or take a look at the Sinch SMS Product page to learn more about our SMS products.