Which should you buy, the ROG Phone II ZS660KL or Zenfone Max (M1) ZB556KL? We offer a thorough comparison of the differences in functions, specifications and performance between the two

The size of the body has a big influence on the ease of carrying and one-handed operation. The narrower the width, the easier it is to firmly grasp and hold, but you also have to take into account the device's thickness. Also, if the width and height are smaller, its easier to operate one-handed since its easier to extend your fingers. On the contrary, if the width and height are large, it's difficult to fit in your pocket and is bulky even when put in a bag, and portability is impaired.

The ROG Phone II ZS660KL has a width of 3.1 inches (77.6 mm), a length of 6.7 inches (171 mm), and a thickness of 0.4 inches (9.5 mm). Also, the Zenfone Max (M1) ZB556KL has a width of 2.8 inches (70.9 mm), a length of 5.8 inches (147.3 mm), and a thickness of 0.3 inches (8.7 mm).

Comparing the width and thickness of the body, the Zenfone Max (M1) ZB556KL is considerably smaller and more compact than the ROG Phone II ZS660KL. The Zenfone Max (M1) ZB556KL excels over the ROG Phone II ZS660KL in terms of being easier to hold with one hand and is therefore less likely to be accidentally dropped. If you're looking for a smart phone with superior grip and hand fit, we recommend purchasing the Zenfone Max (M1) ZB556KL over the ROG Phone II ZS660KL.

Comparing the width and thickness of the body, the Zenfone Max (M1) ZB556KL is considerably smaller and more compact than the ROG Phone II ZS660KL. The Zenfone Max (M1) ZB556KL excels over the ROG Phone II ZS660KL in terms of being easier to hold with one hand and is therefore less likely to be accidentally dropped. If you're looking for a smart phone with superior grip and hand fit, we recommend purchasing the Zenfone Max (M1) ZB556KL over the ROG Phone II ZS660KL.

Comparing the overall size of the two devices, the Zenfone Max (M1) ZB556KL is a considerably larger size than the ROG Phone II ZS660KL. In terms of being more convenient to use one-handed, and less likely to get in the way when you're not using it, the Zenfone Max (M1) ZB556KL is superior to the ROG Phone II ZS660KL. If you're going for the smart phone sized to be easiest to carry and handle with one hand, we recommend buying the Zenfone Max (M1) ZB556KL over the ROG Phone II ZS660KL.

The weight of the device affects hand fatigue and the burden placed upon the wrist. The lighter it is, the longer you'll be able to operate the device without tiring. Also, if the burden placed on the wrist is lower, you'll be able to use the device more comfortably. However if the weight isn't right for you, it could place more of a burden on your body, causing you to feel stress.

The weight of the ROG Phone II ZS660KL is about 240 oz (240 g), and the weight of the Zenfone Max (M1) ZB556KL is about 150 oz (150 g). Comparing the weight of the two devices, the Zenfone Max (M1) ZB556KL is a considerably lighter smart phone than the ROG Phone II ZS660KL, and there is a difference of about 150 oz (90 g). In terms of the burden placed upon your fingers and wrist, the Zenfone Max (M1) ZB556KL is superior to the ROG Phone II ZS660KL. If you are going for a smart phone that won't lead to hand fatigue even after extended use, and is less likely to place a burden on your fingers, we recommend purchasing the Zenfone Max (M1) ZB556KL over the ROG Phone II ZS660KL.

The size of the screen affects usability and screen visibility. A larger screen means larger letters and buttons on apps, so the user is less likely to tap adjacent buttons by mistake. In addition, the user can enjoy a more intense experience when playing games and watching videos.

The ROG Phone II ZS660KL has a 6.59 inch display. Also, the Zenfone Max (M1) ZB556KL has a 5.45 inch display. Comparing the screen size, the ROG Phone II ZS660KL has a larger screen compared to the Zenfone Max (M1) ZB556KL, with a roughly 1.13 inch difference. As a result, the user is less likely to mistap when using apps on the ROG Phone II ZS660KL than on the Zenfone Max (M1) ZB556KL, and is also able to enjoy videos and games on a larger screen. Therefore, we recommend the ROG Phone II ZS660KL.

Pixel density affects picture quality, and the higher the pixel density, the better the picture quality, which means the user can gain more enjoyment from games and videos. In addition, higher picture quality decreases eyestrain, which means that the user will experience less eye fatigue after prolonged use.

The resolution on the ROG Phone II ZS660KL is 1080 x 2340, and pixel density is 391 ppi. Also, the resolution on the Zenfone Max (M1) ZB556KL is 720 x 1440, and pixel density is 295 ppi. Comparing the pixel count, the ROG Phone II ZS660KL has much higher pixel density than the Zenfone Max (M1) ZB556KL, with a difference of roughly 96 ppi. In terms of having better picture quality and exerting less strain on the eyes, the ROG Phone II ZS660KL is superior to the Zenfone Max (M1) ZB556KL. If you are looking for a smartphone that is easy on the eyes, displaying texts and pictures clearly without any blurring, we recommend the ROG Phone II ZS660KL over the Zenfone Max (M1) ZB556KL.

Battery performance greatly affects battery life, but greater battery capacity does not necessarily mean greater battery life, since battery efficiency should also be considered. Bigger screens and higher CPU performance will mean the batteries are depleted more quickly.

The ROG Phone II ZS660KL is 6000 mAh, and the Zenfone Max (M1) ZB556KL is 4000 mAh. Regarding battery capacity, the ROG Phone II ZS660KL has greater battery capacity than the Zenfone Max (M1) ZB556KL, with a 2000 mAh difference. If battery is a priority, then the ROG Phone II ZS660KL is recommended over the Zenfone Max (M1) ZB556KL.

CPU performance affects the ability to process programs, and the ability to process programs is determined by the product of the number of cores in the CPU and the CPU frequency. The higher this performance is, the more smoothly apps and games will run, and with low performance apps and games become heavy and stress is experienced.

The ROG Phone II ZS660KL's CPU is a Qualcomm SM8150 Snapdragon 855+, with performance measured at 2.96GHz+2.42GHz+1.78GHz×8(OctaCore). Also, the Zenfone Max (M1) ZB556KL's CPU is a Qualcomm MSM8937 Snapdragon 430, with performance measured at 1.4GHz×8(OctaCore). Comparing CPU performance, the ROG Phone II ZS660KL has considerably higher specs than the Zenfone Max (M1) ZB556KL. In terms of being able to comfortably play games and run apps smoothly, the ROG Phone II ZS660KL is superior to the Zenfone Max (M1) ZB556KL. If you're going for a high spec smart phone that runs smoothly and comfortably handles games, we recommend purchasing the ROG Phone II ZS660KL over the Zenfone Max (M1) ZB556KL.

RAM affects multitasking ability and the stability of apps. The larger the amount of RAM is, the more stability there will be even in situations where multiple apps are running simultaneously, allowing for comfortable use. In addition, animation will be more smooth, and apps will be less likely to freeze or crash. Also, without sufficient RAM, there are games you won't be able to run, so it is necessary to be careful.

The weight of the ROG Phone II ZS660KL is 12GB and the weight of the Zenfone Max (M1) ZB556KL is 3GB. Comparing the devices in terms of RAM, the ROG Phone II ZS660KL has a significantly larger amount of RAM than the Zenfone Max (M1) ZB556KL, with a difference of about 9GB. In terms of the unlikeliness of crashing and the ease of multitasking, 3D games and VR, the ROG Phone II ZS660KL is superior to the Zenfone Max (M1) ZB556KL. If you're looking for a smart phone that can run multiple apps simultaneously with stability and also allows you to comfortably enjoy 3D games and VR, then we recommend purchasing the ROG Phone II ZS660KL over the Zenfone Max (M1) ZB556KL.

Storage capacity affects the amount of data that is capable of being stored. The larger the storage capacity, the more pictures you can take and the more applications you can install. In addition, if your smartphone accepts SD cards, then you can increase its storage capacity. However, there are performance related drawbacks, including a slower data transfer rate than the primary memory, and you cannot transfer all your data on the card, so be warned.

The data storage capacity of the ROG Phone II ZS660KL is 1024GB. Also the Zenfone Max (M1) ZB556KL is 32GB. Regarding storage capacity, the ROG Phone II ZS660KL has a much larger data storage capacity compared to the Zenfone Max (M1) ZB556KL, with a roughly 992GB difference. In terms of the number of pictures you can save and the applications that you can install, the ROG Phone II ZS660KL is superior to the Zenfone Max (M1) ZB556KL. If you are looking for a smartphone that can save more data, we recommend the ROG Phone II ZS660KL over the Zenfone Max (M1) ZB556KL.

One factor that determines the performance of the exterior camera located on the back of the device (the rear/back camera) is the pixel count. The larger the pixel count, the higher the resolution of the pictures you can take, and the cleaner the pictures will look when printed.

ROG Phone II ZS660KL has a 48 MP main camera. Also, Zenfone Max (M1) ZB556KL has a 13 MP main camera. Comparing rear camera performance, the ROG Phone II ZS660KL has a much higher pixel count compared to the Zenfone Max (M1) ZB556KL, with a roughly 35 MP difference. In terms of taking or shooting high resolution pictures or videos that will look clean when printed, the ROG Phone II ZS660KL is superior to the Zenfone Max (M1) ZB556KL. If you are looking for a smartphone that is suited for shooting videos and taking pictures, we recommend the ROG Phone II ZS660KL over the Zenfone Max (M1) ZB556KL.

One factor that determines the performance of the exterior camera located on the front of the device (the in/front camera) is the pixel count. The larger the pixel count, the higher the resolution of the pictures you can take, and the cleaner the pictures will look when printed.

ROG Phone II ZS660KL has an 24 MP front camera and Zenfone Max (M1) ZB556KL has an 8 MP front camera. Comparing rear camera performance, the front camera of the ROG Phone II ZS660KL has a much higher pixel count compared to the Zenfone Max (M1) ZB556KL, with a roughly 16 MP difference. As a result, the ROG Phone II ZS660KL is more suited than the Zenfone Max (M1) ZB556KL for shooting videos and taking pictures. If you are looking for a smartphone that is suited for shooting high resolution selfies which will look clean when printed, we recommend the ROG Phone II ZS660KL over the Zenfone Max (M1) ZB556KL.