How well do you know your cell phone?

We use a cell phone all the time. But how well do you actually know it?
Photo: Annette Shaff / Shutterstock

We use it all day, but there are some things about it you might not know. Test your mobile phone IQ.

Photo: Annette Shaff / Shutterstock
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Steve Jobs introducing the very first iPhone in 2007.
Photo: David Paul Morris / Getty Images

Question 1 of 8 Score: 0

In what year did the iPhone debut?

Steve Jobs unveiled the iPhone to the world at an event on Jan. 9, 2007, and the first iPhones went on sale on June 29, 2007. When it initially debuted, the phones were only available to AT&T customers. Time magazine, not surprisingly, named it the invention of the year.

Photo: David Paul Morris / Getty Images
The StoreDot device can charge a cell phone in under a minute.
Photo: Courtesy StoreDot

Question 2 of 8 Score: 0

Tech firm StoreDot wowed audiences by recharging a cell phone how quickly?

Israel-based StoreDot's ultra-fast battery charger can charge a phone in 30 seconds. Consumers will be able to get their hands on the device in early 2017. The company now has its sights set on electric car batteries that charge in 5 minutes.

Photo: Courtesy StoreDot
The fear of being without our cell phone actually has a name.
Photo: BlueSkyImage / Shutterstock

Question 3 of 8 Score: 0

The fear of being away from your cell phone is called...

"No mobile phobia," also known as nomophobia, is the 21st-century fear of being somewhere without your trusty cell phone nearby. According to research out of Britain, 13 million people in that country claim to be afflicted with this modern-day ailment.

Photo: BlueSkyImage / Shutterstock
The iPhone 4 Diamond Rose Edition is believed to be the most expensive cell phone ever.
Photo: Courtesy Stuart Hughes

Question 4 of 8 Score: 0

The most expensive cell phone ever could be yours for ...

Famed Liverpool luxury designer Stuart Hughes designed an iPhone 4 Diamond Rose Edition that carried a price tag of $8 million. The reason? The phone is encased in 500 diamonds with an additional 53 atop the Apple logo. Only two of the devices are believed to be in existence.

Photo: Courtesy Stuart Hughes
Which one of these companies helped invent the cell phone?
Photo: Logos courtesy: Apple, Motorola, Blackberry, IBM

Question 5 of 8 Score: 0

Which company helped develop the cell phone?

It was at Motorola’s Israel R&D center, opened in 1964, that engineers first developed original cell-phone technology. The company now has several research facilities in Israel with more than 800 engineers there working on new technologies.

Photo: Logos courtesy: Apple, Motorola, Blackberry, IBM
A cell phone meeting water is not usually the best introduction.
Photo: Lucadp / Shutterstock

Question 6 of 8 Score: 0

The majority of cell phones in Japan are waterproof to survive...

In Japan, some estimates say 90 percent of mobile phones are waterproof. “This is very unique," said a Panasonic spokesman. "Young Japanese women prefer to use their cellphones even when taking their showers.”

Photo: Lucadp / Shutterstock
Rule #1: Don't bring your cell phone into the bathroom.
Photo: iQoncept / Shutterstock

Question 7 of 8 Score: 0

In Britain, how many cell phones are dropped in the toilet each year?

According to insurance claim data, about 100,000 cell phones are lost down the loo each year in England. An additional 23,000 were dropped in the bath.

Photo: iQoncept / Shutterstock
A customer at an Apple store in France checks out the iPhone 6.
Photo: Endermasali /Shutterstock

Question 8 of 8 Score: 0

The iPhone 6 went down in history for selling how many devices in the last quarter of 2014?

California-based Apple sold 74.5 million iPhones in the final quarter of 2014. The total equates to more than 34,000 phones sold every hour, around the clock, for three months straight. Apple CEO Tim Cook called demand for the device "staggering."

Photo: Endermasali /Shutterstock
We use a cell phone all the time. But how well do you actually know it?
Photo: Annette Shaff / Shutterstock
Photo: Annette Shaff / Shutterstock