Dial 199 or 1299 from your Jio number and check the caller details
Open the MyJio app and view your number in the account section
Check the SIM pack or welcome letter for the printed Jio number
Insert the SIM in a phone and check the number in phone settings
Call or message another phone and see the number displayed
Send an SMS or missed call to another number and note the caller ID
Visit a Jio Store or contact Jio customer care with your ID proof
Check the SIM card tray or SIM packaging if the number is printed there