How do I check the model code, serial number and IMEI of my Samsung I9300 Galaxy S III marble?

please take care when removing the cover and battery of your Samsung I9300 Galaxy S III marble

Remove the rear cover and the battery. Beneath the battery you will find a sticker with:

1. Model code
2. IMEI number
3. Serial number

Note: dial *#06# on your Samsung I9300 Galaxy S III marble to get the IMEI number displayed on the screen.