Hi Brian,
Welcome along to Puma ownership!
Yes charging a phone from the 12V power supply is normal :grin:
It's not normal that your Puma does not have one, I imagine the wiring is already there since it would have had one originally!!
There are two locations for the lighter, one was inside the lower ash tray and later models had them exposed on the heater panel. If you have neither I assume you have an earlier heater panel and a later ash tray hence missing socket!