Detailed review of the iPhone 12: OLED screen, A14 Bionic chip, and 5G connectivity, priced from 5 million VND.
The iPhone 12 features a sharp OLED display, a 5nm A14 Bionic chip, and 5G connectivity. The price of a used one, ranging from 5 to 6 million VND, makes this model still very attractive.
The iPhone 12 is a mid-range smartphone featuring OLED display technology, a 5nm A14 Bionic processor, and 5G connectivity. Despite being released some time ago, the device still retains high resale value, with used units priced between 5.19 and 6.19 million VND.
Stylish square design and high-quality OLED screen.
The iPhone 12 marked a design turning point with its switch to a flat, square-edged aluminum frame. This design shaped the look of many subsequent generations of iPhones. The front of the device retains the notch containing the Face ID facial recognition sensor system and the front camera.

The biggest display improvement on the iPhone 12 is the switch from an LCD panel to Super Retina XDR OLED technology. This screen boasts a resolution of 2532 x 1170 pixels, a significant increase in sharpness compared to the 1792 x 898 pixels on the iPhone 11.

Besides its high resolution, the OLED screen on the device also meets the HDR10 rating, supporting optimal display for videos recorded using Dolby Vision, providing a vivid movie and image viewing experience.

Enduring performance from the 5nm A14 Bionic processor.
Inside the iPhone 12 is the A14 Bionic chip – the first processor manufactured using a commercially available 5nm process. This upgrade in manufacturing process helps the processor maintain stable performance and be more energy efficient.

The A14 Bionic's hardware power is more than sufficient for demanding graphics-intensive gaming and video editing tasks. Even when compared to current mid-range phones, its performance smoothly meets everyday usage needs.
Dual camera system with wide-angle and ultra-wide-angle lenses.
In terms of optics, the iPhone 12 is equipped with a dual rear camera system, both with a resolution of 12 MP:
- Main camera (wide angle):It features a 12MP resolution, f/1.6 aperture, 26mm focal length, 1.4µm pixel size, and supports phase-detection autofocus (PDAF) and optical image stabilization (OIS).
- Ultra-wide-angle camera:12 MP resolution, f/2.4 aperture, 120-degree wide-angle lens.

Under normal lighting conditions, the image quality from the iPhone 12 is comparable in resolution and color to newer generations. The main differences only appear in extreme night shooting scenarios or environments requiring a very high dynamic range.
Reference price in the used machine market
Currently, Vietnamese users can access used iPhone 12 devices with prices varying depending on storage capacity:
| Capacity version | Reference price |
|---|---|
| iPhone 12 - 64GB | 5.19 million VND |
| iPhone 12 - 128GB | 6.19 million VND |
Priced between 5 and 6 million VND, the iPhone 12 is a suitable choice for those new to iOS, students, or senior citizens who need a device with a beautiful screen, 5G support, and stable long-term performance.


