Check the status of your current repair.
Check the warranty status of your phone.
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.
You may have switched the mobile data connection off. To switch the mobile data connection on, swipe down from the top of the screen, and select the mobile data icon.