All the current TVs, monitors and displays of devices including mobile phones, tablets, and laptops consist of pixels. The more pixels on the screen, the better image is displayed. In other words, the more pixels, the more details are shown. For example, HD ready resolution - 1280x720 (a.k.a. 720p) means the screen is composed of 1280 pixels in width and 720 pixels in height.
Several decades ago, televisions had resolutions of 480x360 (a.k.a. HVGA, 360p) or 640x480 (a.k.a. SD, 480p). As years passed, technologies have improved and the first version of HD resolution came out in 2005. Today, many HD resolutions are discovered and you can see the list of the currently available HD resolutions below in the article. There is no doubt that after a decade, even higher HD resolutions will be discovered and will be used in production.
You need to keep in mind several techniques to find your suitable wallpaper HD for your computer or mobile phone. In most cases, wallpaper whose width is 720 pixels and height is 1280 pixels are the most common resolutions for smartphones. In contrast, 1280 pixels in width and 720 pixels in height could be your best choice for your laptop screen. The only thing you need to know before choosing the right wallpaper HD in high quality is knowing your concrete screen resolutions and take into account that phone screens’ width are always smaller than their height, on the other hand, the width of monitors are larger than their height.