The phone has replaced a lot of things:
Alarm Clock
Watch
Photo Album
PC
Calculator
Xbox/Gameboy/...
TV
Online Banking
Credit Card
Wallet for some
JC Penny/Sears/JC Whitney Catalog
Bio monitor, heart rate, steps, ekg, pulse
Walkie Talkie
Email
Airline Ticket
Event Ticket
Radio/Podcast
visual Doorbell/home security system/baby monitor
Car Key Fob - Onstar and others
Car diagnostics front end
Tom Tom/Garmin/GPS/road atlas
WiFi hotspot/Router
Encyclopedia/ Research
Translator
Concierge/Yelp
Replaces CD/Cassette/Vinyl/8-Track tapes
ohh and Camera /Video recorder
And that's from a 55 year old. Just think if I was 16.
You could probably multiply this list times 20.