Extend your device's original Manufacturers Limited Warranty for an additional 12 months.
Read more about your phone's limited warranty.
Enter *#0000# on your phone’s keypad. The display shows your phone’s model and product code.
On older phones, these numbers are printed on a white label in the battery compartment, underneath the battery.
Select Menu > Messaging > More > Message settings > Text messages (or General settings) > Delivery reports. With dual SIM phones, you can also select for which SIM to turn the reports on.