How to choose iPhone XS, iPhone XS Max and iPhone XR? what's the difference?

At the Apple conference in 2018, Apple released a total of three iPhones, namely iPhoneXs, iPhoneXs Max and iPhone XR.
The three mobile phones in 2018 all look similar. The iPhone XS, iPhone XS Max, and iPhone XR are all designed for full-screen bangs, and there is no fingerprint to unlock. In order to make it easier for everyone to choose to buy, I will now introduce to you the differences between iPhone XS, iPhone XS Max and iPhone XR!

Screen size and display

The iPhone XR is a 6.1-inch LCD display with a pixel density of 326ppi.
The iPhone XS is a 5.8-inch OLED display with a resolution of 2436 × 1125 and a pixel density of 458ppi.
The iPhone XS Max is a 6.5-inch OLED display with a resolution of 2688 × 1242 and a pixel density of 458ppi.
The iPhone XS has the smallest screen of the three, while the iPhone XS Max has the largest screen, with 6.5 inches of space for viewing. The iPhone XR uses Apple ’s past LCD screen and lacks the pressure-sensitive 3D Touch feature introduced on the iPhone 6S. Conversely, when you long-press an icon on the display, it uses haptic feedback like a trackpad.

Material and color

iPhone XR: aluminum body with glass on the front and back; available colors: blue, coral, yellow, white, black, red
iPhone XS: stainless steel body, glass back and front; selectable colors are gold, silver, space gray
iPhone XS Max: stainless steel body, glass back and front; selectable colors are gold, silver, space gray
Camera function
iPhone XR: 12-megapixel camera (f1.8), 5x digital zoom, three portrait lighting effects
iPhone XS: dual 1.2-megapixel camera (f 1.8 wide-angle and f2.4 telephoto), 10x digital zoom, five portrait lighting effects
iPhone XS Max: dual 12-megapixel camera (f 1.8 wide-angle and f2.4 telephoto), 10x digital zoom, 5 portrait lighting effects
All three iPhones are equipped with at least a 12-megapixel rear camera (with OIS) and a 7-megapixel front camera that supports Face ID unlocking and Animojis. Although the iPhone XR lacks a second rear camera, it uses the software to shoot an artistic portrait style with a background blur effect. Smart HDR is a new feature that is suitable for the automatic detection and repair of three iPhones, bringing out highlights and deepening shadows. Enhanced portrait selfie software.

Battery Life

Apple never shares a specific battery capacity, but it does provide guidance on how long other devices can last than expected. The iPhone XR may have the three longest battery life.
iPhone XR: Apple claims it will run 90 minutes longer than iPhone 8 Plus, which is the most durable iPhone of 2017
iPhone XS: Apple claims it will run 30 minutes longer than iPhone X
iPhone XS Max: Apple claims it will run 90 minutes longer than iPhone X

Purchase advice

iPhone XR

The iPhone XR is increased to 6 colors at once, with more options, but it is not difficult to imagine the iPhone XR as the iPhone 5C many years ago. That is what everyone said is the cheap version, but the iPhone XR is positioned after the iPhone 8 and iPhone 9, which is quite satisfactory. If you are not too demanding on mobile phones, you can choose iPhone XR.

iPhone XS / iPhone XS Max

The iPhone XS is positioned in the standard version of the iPhone XS Max. The choice between the two models is nothing more than a big screen and a small screen. The iPhone XS is the most top-notch in Apple's product line regardless of the screen camera size. If the situation is ample and you have high requirements on the details of the mobile phone, you can choose any of the iPhone XS / iPhone XS Max.