You get the choice to pay the remaining value of the phone and keep it, or enter a new "lease" agreement for a brand new phone at the end of the term. The formula is simple:
purchase fee = device list price – lease payments made – remaining discounts or trade-in credits.
If you're paying $1368 over 24 months, you could pay the remaining $632 after those 24 months and keep it with 0% interest.
So let's say you go to Hertz or Avis at the airport, you get a car for a month at $1700. The car has an MSRP of $40,000 and Hertz/Avis gives you the option to buy the car for $38,300 after you return it.
Is that leasing or renting in your country?