I am using a smartphone for data communication only(no voice).

I use a data SIM of 500 yen per month, low speed data communication, however, you can enjoy YouTube so much.

But I thought

Even if it is said to be a "smart" phone, it is mobile personal computer, after all.

until today's morning.

-----

Today, to attend relatives' wedding ceremonies, I used a car navigation function of Google map,

I was surprised seriously and seriously, for example,

Seriously and earnestly seriously seriously seriously Seriously serious really seriously - ("Sodachi Oikura" style)

_ -----

Since I was involved in car navigation in the car navigation founding period,

I am an engineer who loves location information technology to had filed a couple of inventions on GPS.

However, I have escaped my notice of application of GPS (like car navigation).

Ultra low speed, data SIM of 500 yen per month.

Why can it realize functions of natural rerout, bird view display, auto map expansion and reduction ?

It seems like a magic.

-----

So, today's conclusion.

"Smartphone is a car navigation system"

For me, the above is necessary and sufficient.