A lot fail to tell if a smartphone is a computer, so today learn, know and answer that question mark from your head on why a smartphone is known to be a computer
The First Mobile Phone Call Was Made 40 Years Ago Today
On April 3, 1973, Motorola employee Martin Cooper stood in midtown Manhattan and placed a call to the headquarters of Bell Labs in New Jersey.
And because of the change of generation and presentation of the future, they have upgraded to the intelligent world where the world is in technology where we have Androids, iPhones, and Microsoft.
Reasons a phone is known to be a computer
Smartphones are just handheld computers. Even a budget smartphone has more computing power than what was on the US Space Shuttle. So the real question is what makes it a computer versus a smartphone. I would guess the applications you run, and how you interact with those applications. When you think of using a computer you think of a display, a keyboard, and a mouse/touchpad/touchscreen. Your smartphone has the show and the touchscreen, all you need is the keyboard.
As most phones have Bluetooth, I actually do not know of one that does not, the question is does the phone support more than just headsets over Bluetooth? Fortunately, most do. So if you pair a keyboard to your phone, you can operate apps such as Google Docs, Microsoft Word/Excel/PowerPoint/Outlook, and many others just as if you were at a traditional computer. The only issue you will have is the size of the screen.
Similarities between a phone and a computer
Desktop computers, laptops, smartphones, and tablets have a lot in common. They all contain a CPU, memory, display functionality, and use an operating system that runs programs (apps) to perform different functions
Phones, tablets, and laptops are all potable gadgets which makes them easy to access and easy to carry to whichever place you want Phones are somehow known to be pocket computers.