Comparison of ASUS ROG Phone 3 and iPhone 12 Pro Max
Display
Asus ROG Phone 3 boasts an expansive AMOLED display measuring 6.59 inches with a resolution of 2340×1080. On the other hand, the iPhone 12 Pro Max features a 6.7-inch OLED Super Retina XDR display with a resolution of 2778×1284 pixels.
In many comparisons between AMOLED and OLED displays, it has been highlighted that OLED displays offer clear, lifelike images with high brightness and contrast, while AMOLED displays provide vibrant colors, good contrast, and durability. When it comes to durability, OLED displays seem to have an edge over AMOLED displays.

However, the downside of the iPhone 12 Pro Max lies in its screen refresh rate, which is limited to 60Hz, while the Asus ROG Phone 3 has been upgraded to 144Hz.
Camera
The iPhone 12 Pro Max delivers consistency in its triple rear camera setup, consisting of a wide-angle, ultra-wide-angle, and telephoto lens, all with 12 MP resolution. With the support of optical image stabilization technology based on sensor-shift mechanism, it enhances the capability to shoot high-quality 4K videos.

Moreover, the camera cluster of the iPhone 12 Pro Max introduces a new element - the LiDAR sensor, which helps enhance many features and adds various shooting capabilities. For instance, just by using the iPhone 12 Pro Max, you can measure the height of a person in front of the lens. The low-light photography capability is significantly improved, capturing more details and providing clearer landscapes.
On the other hand, the Asus ROG Phone 3 features a triple camera setup including a 13 MP wide-angle lens, a 5 MP macro lens, and a Sony 64 MP sensor. The camera system of the Asus ROG Phone 3 also supports HDR mode and 4K video recording. However, due to its gaming-oriented design, there aren't overly high expectations for the camera features of this smartphone.
Memory & Storage
The Asus ROG Phone 3 is equipped with the Snapdragon 865 Plus processor paired with 128GB RAM and 512GB internal storage. Therefore, the Asus ROG Phone 3 is a gaming powerhouse capable of handling any type of game, providing an ultimate gaming experience.
Not to be outdone, the iPhone 12 Pro Max with the support of the A14 Bionic chip, 6GB RAM, and 128GB internal storage also delivers smooth gaming performance. However, after about an hour of gaming, the iPhone 12 Pro Max tends to heat up and the battery drains fairly quickly.
Battery
The Asus ROG Phone 3 is equipped with a massive 6000 mAh battery estimated to last over 7 hours, supported by fast charging 4.0. This means that in just about an hour of charging, you'll have a smartphone with 100% battery ready for gaming.
On the other hand, the iPhone 12 Pro Max, with its 3687 mAh battery and up to 15W fast wireless charging technology, is sufficient for web browsing and movie watching all day long.
Which one to buy: ROG Phone 3 or iPhone 12 Pro Max?
If you're considering these two phones solely based on price, then undoubtedly the Asus ROG Phone 3 would be a better choice as it is much cheaper than the iPhone 12 Pro Max. Specifically, the current price of the Asus ROG Phone 3 is 19,490,000 VND, while the iPhone 12 Pro Max is significantly higher priced:
- iPhone 12 Pro Max 128GB: 27,790,000 VND.
- iPhone 12 Pro Max 256GB: 27,990,000 VND.
- iPhone 12 Pro Max 512GB: 32,590,000 VND.
Considering the purpose of use, the Asus ROG Phone 3 is a preferred choice if you only want a good device for gaming. However, if gaming is just a secondary concern, and you have other needs like quality photography and entertainment, then the iPhone 12 Pro Max would be a more suitable choice.

Therefore, depending on the primary usage and financial capability, each person will have their own choice. Overall, both the Asus ROG Phone 3 and the iPhone 12 Pro Max are favored and trusted by many users.