Was picked up at yellow cab taxi stand at JFK JetBlue terminal 5. Was dropped off at Courtyard by Marriott at 145-11 North Conduit Ave, Jamaica, NY. In the process of using the debit card to pay, I placed the phone on the seat. Immediately after the cab left I realized I left my phone in the cab. We called yellow cab of NY lost and found and left a message, We also called NYC 311 and was directed to call JTL Management so I immediately did and left them a voice message. I would appreciate any assistance and would show my appreciation if I retrieve my phone.