iphone 6
Does the increase in size change the usability, The biggest point of the iPhone 6 and iPhone 6 Plus is "the increase in size". The iPhone 6 has a 4.7-inch display, and the iPhone 6 Plus a 5.5-inch display. The difference in size is obvious when you line it up with the 4-inch iPhone 5s. You can tell that the size has increased quite a bit.

The display size has increased so the body itself has gotten bigger as well. I mainly use the 4-inch iPhone 5 and I got used to the 4.7-inch iPhone 6 righty away. Using the Japanese "flick" input method with one hand is also a piece of cake. I'm right handed, but I have no trouble using the phone with my left hand as well.

The width, that affects the "holdability", has gone from 58.6mm to 67.0mm, but because of it's new round design and thinness, you don't feel that it's that wide. However, when you actually use it, it's not the width but the height that becomes a concern. Since the height has increased from 123.8mm to 138.1mm, when you use it with one hand, your thumb doesn't reach the upper part of the display that you were able to reach before.

So, there's a useful feature called Reachability. When you double-tap the home button, the content on the screen will move down to the bottom, making it possible to reach with your thumb. If you make use of this feature, you can operate the phone with one hand, not having to adjust your grip everytime.

On the other hand, the iPhone 6 Plus is 158.1mm tall and 77.8mm wide. There's no denying it's big. It fits in chest pockets and pant pockets but it feels stuffed. When I first held it in my hand I thought, "I can use this with one hand", but when I actually tried it on the train, I instantly realized that using it one-handed is really difficult.

Honestly, it's nearly impossible. Using both hands is fundamental. As I have stated before, the iPhone 6 Plus has a special user interface for landscape mode that makes the best of the large 5.5-inch display. On the home screen the dock is displayed on the right, and for certain apps, such as Mail and Messages, a dual-pane mode is featured, making it more efficient.

And of course, since the display is big, pictures and videos are easier to view, and e-books are easier to read. For those of you who can't read small letters, the 5.5-inch iPhone 6 Plus must be "the large-display iPhone" you've been waiting for. The display resolution of the 4.7-inch iPhone 6 is 1334x750, and the 5.5-inch iPhone 6 Plus is 1920x1080. The contrast ratio is higher compared to the iPhone 5s, making it possible to express black, "more black". A new technology called "Dual-domain pixels" is featured for wider viewing angles.

Apple calls this new display, "Retina HD display". The display is very high quality and I was especially surprised by how wide the view angle is. Because of the big display of the iPhone 6 Plus, there should be times when you show the screen to multiple people. The wide view angle will sure be useful then. The size of the iPhone 6 is 138.1mm(height) x 67.0mm(width) x 6.9mm(depth), and weighs 129g. There's no problem using it with one hand.

It's bigger and heavier than the iPhone 5, but it fits well in the hand.The size of the iPhone 6 Plus is 158.1mm(height) x 77.8mm(width) x 7.1mm(depth), and weighs 172g. It's difficult to use with one hand. It's not impossible, but I almost dropped it when I used the Japanese "flick" input method and when I took pictures. The 4-inch iPhone 5s (left), the 4.7-inch iPhone 6 (center) and the 5.5-inch iPhone 6 Plus (right). The increase in size is obvious.