
Android, being the most popular mobile operating system, offers a diverse range of smartphones on Google's platform. These devices excel in terms of specifications, design, battery life, and features.
1. Best Android Smartphone of 2015
Android stands out as the most widely used mobile operating system, providing a versatile range of smartphones on Google's platform. These devices excel in various aspects, including specifications, design, battery life, and features.
Samsung Galaxy Note 5
When it comes to features, hardly any smartphone rivals the advantages offered by Samsung's Galaxy series. The Galaxy Note 5 is equipped with a QuadHD display, a touch-based fingerprint sensor, robust configuration with 4GB RAM and high-speed USF 2.0 internal storage. Additionally, the Note 5 boasts a 16-megapixel camera with OIS-supported lens, providing up to 2 days of battery life and supporting fast and wireless charging.

Galaxy Note 5 boasts the most advanced and comprehensive features in the Android smartphone arena.
Continuing the legacy of previous Galaxy Note models, the Note 5 distinguishes itself from most large-screen smartphones with the S-Pen. This stylus allows for writing and drawing like a real pen, integrating convenient note-taking features and smart device control. Samsung's premium smartphone sports a fresh look with a glass casing and metal frame. The only drawback with the Note 5 is the absence of a memory card slot, unlike its predecessors.
While the G2 and G3 didn't leave a strong impression with their cameras, the G4 stands out as the best Android smartphone camera of 2015. Its advantages lie in fast focusing speed and quick capture with laser sensor, a large 16-megapixel camera with three-axis OIS, and the first smartphone lens with an aperture of f/1.8 for better low-light performance.

LG G4 excels in photography, offering professional features akin to real cameras.
Alongside its hardware prowess, LG's camera software is both user-friendly for regular users and packed with features for photography enthusiasts, supporting RAW image format. However, the product design lacks allure, the leather back version has mediocre durability, and LG G4's configuration is not the most powerful among Android devices this year.
Sony Xperia Z5
Without the need for QuadHD resolution, Xperia Z5's display still impresses. The IPS LCD panel, coupled with Sony's renowned image technologies like Triluminos Display (expanding color range), Mobile Bravia Engine (image processing), and X-Reality (noise reduction, enhanced detail), delivers a vibrant, vivid, and sharp Z5 screen. When placed alongside the iPhone 6 Plus or 6s Plus, Apple's display, despite sharing a similar panel type, lacks the allure present in Sony's.

Xperia Z5 excels in entertainment with excellent audio and beautiful visuals.
Beyond the visual experience, Xperia Z5 also impresses in the auditory department with dual front-facing speakers that enhance the gaming and movie-watching experience. This Xperia model is Hi-res Audio certified, capable of processing 32-bit/192kHz high-quality audio, surpassing the standard CD quality. Sony has incorporated many audio processing technologies from their Walkman music players into this device.
However, compared to other Android competitors, Sony falls short in the camera department. Despite having robust hardware, the software lacks user convenience.
Asus Zenfone 2
Considering performance relative to cost, Asus's Zenfone consistently receives high praise. Despite being a mid-range option priced around 7 million VND, the Zenfone 2 stands out as the first smartphone with 4GB RAM available in Vietnam.
Compared to numerous flagship models from Sony, LG, or HTC, Asus's Zenfone 2 boasts an additional 1GB of RAM. Consequently, multitasking on the device is significantly smoother. Users can open multiple tabs while browsing the web, run various applications and games simultaneously without the need to reload when switching.

Powered by a new generation 4-core Intel Atom chip running at 2.3 GHz, the Zenfone 2's performance rivals that of high-end Android smartphones like the Galaxy S6 and HTC One M9, despite being priced nearly half as much. However, as it doesn't belong to the high-end category, the Zenfone 2's design is primarily plastic, with a somewhat uninspiring appearance, similar to other budget-friendly Zenfone models.
Lenovo Vibe P1
Similar to the Zenfone 2, the Vibe P1 is not a high-end model. However, when it comes to battery life, no smartphone this year surpasses Lenovo's offering, even among high-end and expensive products. With a massive 5,000 mAh battery, double that of the Galaxy Note 5, Xperia Z5, or iPhone 6s Plus, the Lenovo Vibe P1 can operate continuously for 2 or 3 days. It can also be fully charged in just 2 hours thanks to fast charging technology.

In addition to its long-lasting battery, the Lenovo Vibe P1 can charge other phones and various devices through its microUSB port.
Moreover, Lenovo's smartphone serves as a backup power source when needed, utilizing the microUSB port and USB OTG accessory to charge other devices, including iPhones and various Android smartphones.
Lenovo also equips its mid-range smartphone, priced at over 6 million VND, with a fingerprint sensor that matches the sensitivity of the Note 5 and iPhone 6s. However, the product's configuration and camera quality do not match those of high-end Android devices.
Source: sohoa.vnexpress