The iPhone 6 and 6 Plus offer the largest iPhone screens yet.

The iPhone 6 has a 4.7 inch screen and the 6 Plus is 5.5 inches, according to Apple’s website.

The size is about combining two devices (a phone and a tablet) into one, said Michael Oberdick, owner of Apple Outlet in Bowling Green.

“People are trying to do more with their phones than they used to. In order to do that they need a larger screen,” Oberdick said.

As a business owner, he’s found emailing to be easier on the Plus. He can see his list of conversations while typing a reply to one email in particular.

Joey Kujawski agreed that bigger screens are a necessity.

“How we use our phones has changed a lot,” the Ziggabyte student team leader said.

In general, people like the increasing screen sizes, Oberdick said, though the 6 Plus is too much screen for most people.

“The bigger size one’s always going to be a niche market, I think,” Oberdick said.

At some point iPhones have to stop growing.

“After a certain point it becomes an iPad, doesn’t it?” Kujawski said.

Oberdick would have expected the maximum smartphone size to be about what the 6 Plus is, he said, but the Samsung Galaxy Mega is actually bigger. Its screen measures 6.3 inches, according to Samsung’s website.

Growing iPhones may cut into iPad mini sales, Kujawski, said. The iPad Mini’s screen is 7.9 inches.

Size isn’t the only change for the 6 and 6 Plus.

The display is now Retina HD, an improvement over Retina, Kujawski said. Retina HD has more pixels.

Slow motion video now shoots in 240 frames per second, double the old rate of 120 frames per second, Kujawski said.

At the other end of the size spectrum, there’s the Apple Watch, which is “coming early 2015” according to Apple’s website.

It’s available in two sizes: either 38 or 42 millimeters in height.

The Watch won’t be primarily controlled through a touchscreen, which Oberdick said is smart because of how impractical a touchscreen that small would be. Instead, the dial that on most watches would adjust the time will navigate between features.

The Watch is partly focused on health, Oberdick said.

It monitors heart rate and calories burned, and shows fitness trends over time.

Kujawski isn’t sure whether the Watch will have long-term popularity or whether its popularity will fizzle out. But Apple’s marketing strategy is smart, he said. The Watch will be sold in department stores and places people would usually buy watches, instead of just being sold where Apple products normally are.

“If they can make it user-friendly and health-beneficial, I think it’s going to be very popular,” Oberdick said.