- Android is the dominant mobile operating system, open, flexible and present on all types of devices.
- The key features to compare in an Android mobile phone are processor, RAM, screen, camera, battery, and connectivity.
- Version fragmentation exists, but Google and manufacturers are constantly improving updates and security.
- The ecosystem of apps, services, and price ranges means there's an Android device suitable for almost any type of user.
If you're thinking about buying a new phone and have opted for Android, you've probably noticed that Choosing between so many Android phones and their features It can become a bit chaotic: processors, cameras, system versions, custom interfaces, 5G, NFC… the list is endless. Luckily, Android is such a widespread and mature system that, with a little well-organized information, it's quite easy to make the right choice.
In the following lines you will find a very complete guide that mixes the more technical part of the system (how Android works internally) with Everything you need to know about a modern Android phonePower, screen, battery, cameras, connectivity, system versions, security, app ecosystem, price ranges, and much more. The idea is that you finish reading with the feeling of "okay, now I know which Android is right for me and why."
What exactly is Android and why does it dominate the market?
Android is a mobile operating system based on the Linux kernel and open source software which Google bought in 2005 when it acquired Android Inc. Since then, it has become the most widely used smartphone operating system on the planet, with market shares that have gone from 50% more than a decade ago to around 70% of the global mobile market today.
The key to its success lies in the fact that it is an open platform: the codebase, known as Android Open Source Project (AOSP)Android is mostly released under the Apache license. This allows manufacturers like Samsung, Xiaomi, OnePlus, Motorola, and Google (with its Pixel phones) to adapt Android to their devices, and enables the community to create alternative ROMs like LineageOS and GrapheneOS.
Over time, Android has moved beyond mobile phones to become involved in almost everything: tablets, smartwatches (Wear OS), cars (Android Auto and Android Automotive), televisions (Android TV), laptops and even set-top boxesIts flexible architecture, based on Linux and a Java/ART application layer, makes it perfect for adapting to all types of hardware.
Furthermore, a massive ecosystem has been created around Android: Google Play Store surpasses two million appsIn addition to this, there are alternative app stores like the Amazon Appstore and F-Droid (focused on open-source software). All of this has led to Android having over 3.6 billion users worldwide today, with a particularly strong presence in markets like India and Brazil.
Evolution of the system: from desserts to numbers
One of Android's defining characteristics has always been its unusual way of naming versions. For years, each major release was named after a dessert or sweet in English in alphabetical orderCupcake, Donut, Eclair, Froyo, Gingerbread, Honeycomb, Ice Cream Sandwich, Jelly Bean, KitKat, Lollipop, Marshmallow, Nougat, Oreo, and Pie. There was even a 1.0 version known as Apple Pie and a 1.1 version called Banana Bread.
Starting with Android 10, Google decided to stop publicly using candy names and move to a purely numerical nomenclature (Android 10, 11, 12, 13, 14, 15, 16, 17…). Even so, internally dessert names are still used as development codes (for example, there has been talk of versions with codes such as “Baklava” or “Cinnamon Bun”).
Android has received constant updates since 2008, fixing bugs, improving performance, adding security features, and giving more prominence to artificial intelligence. The current stable version of the AOSP base system is Android 16Android 17, meanwhile, is in beta and is part of a new biannual release schedule with code releases in the second and fourth quarters of the year.
If we look at what users actually use, we see a strong fragmentation: Android 14 has around 33% market share, while Android 13 is below 17%.Android 12 and 11 are still very much present and there are still some left old terminals with Android 10, 9 Pie, 8 Oreo, or even 5 Lollipop in circulation. This is one of Android's biggest challenges: not everyone receives the latest versions at the same rate.
Fragmentation, obsolescence, and Google's efforts to improve
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version fragmentation This is probably the most common criticism of Android. Many manufacturers release a phone and, after a few months or a couple of years, stop updating it, which leads to... devices with older versions that no longer receive updates or security patches.
Although in 2011 Google tried to get manufacturers to commit to provide support for at least 18 months for each modelThe initiative ultimately came to nothing. This, coupled with the fact that each new version typically demands more processor and memory resources, has led to Android often being seen as one of the driving forces behind so-called planned obsolescence in mobile devices.
To mitigate this problem, Google has implemented several strategies. The most important is to separate as many apps and components as possible from the base system in order to update them via Google Play without depending on the manufacturer's firmware. This is how Google Play Services was born, allowing users to update Maps, the Play Store itself, the keyboard, YouTube, Drive, and other elements independently.
In 2017 came the Treble Projectwhich reorganized Android to separate the manufacturer's layer from the system kernel, making updates easier. Later, the Google Play System Updates (Project Mainline)which allow critical parts of the system to be updated as if they were apps, directly from the Play Store.
In addition, Google and some manufacturers like Samsung have started offering up to seven years of security and version updates In high-end models like the latest Pixels, this greatly improves the device's lifespan and reduces the feeling of being "stranded" after just a few years.
Android's internal architecture: how it works inside
Beneath the pretty interface of icons and widgets, Android relies on a rather complex structure. It all starts with Linux kernel, which handles memory management, processes, security, networking, and driversThe entire library layer, the virtual machine, and the application framework are stacked on top of it.
In older versions, apps ran on the Dalvik virtual machinewhich used .dex (Dalvik Executable) files and Just-In-Time (JIT) compilation to speed up the most frequently used parts of the code. Starting with Android 5.0, Dalvik was replaced by ART (Android Runtime), which compiles the bytecode at installation time to improve performance and battery consumption.
Native libraries in C/C++ include elements such as the graphics surface manager, OpenGL ES 2.0/3D for graphics, SQLite as a lightweight databaseThe WebKit engine for the browser, media libraries, SSL, and the Bionic standard library are all managed through this layer, and all system hardware and services are exposed to apps via framework APIs.
Above, we find the Android application frameworkThis gives developers access to the same APIs used by system apps (contacts, SMS, notifications, maps, etc.). The architecture is designed so that any app can reuse components from another, as long as security rules are respected.
Finally, in the top layer are the user applicationsPhone, SMS, calendar, browser, maps, email, camera… and, of course, all the apps you install from Google Play or any other store. Each app runs in its own process, with its own virtual machine instance, which helps isolate failures and improve security.
Key features of current Android phones
When we talk about the features of Android phones today, we're referring to both the capabilities of the operating system and the typical hardware integrated into modern smartphonesAt the platform level, Android supports a huge variety of technologies that you should take into account when choosing your next mobile phone.
In terms of connectivity, a modern Android smartphone typically offers compatibility with 4G and 5G mobile networks, dual-band Wi-Fi, Bluetooth, NFC for mobile payments, and in some cases WiMAX or market-specific technologies. They are also compatible with GSM/EDGE, CDMA, EV-DO, HSPA, HSPA+, and other standards that have become the norm in many regions.
In storage, Android natively uses SQLite as a lightweight local databaseHowever, for the average user, the most important thing is the internal memory (in gigabytes) and whether the phone allows for expandable storage via microSD card. These days, it's reasonable to start with 128 GB of internal storage if you don't want to run out of space.
In multimedia, Android phones support a wide variety of audio, video, and image formats: WebM, H.263, H.264, MPEG‑4, AMR, AAC, MP3, MIDI, Ogg Vorbis, WAV, JPEG, PNG, GIF, BMP and more. In terms of streaming, the system supports RTP/RTSP, HTML5 progressive playback, and, through specific apps, technologies such as RTMP or third-party solutions.
In additional hardware, most devices include sensors: cameras for photos and videos, capacitive multi-touch screen, GPS, accelerometer, gyroscope, magnetometer, proximity sensor, light sensor, fingerprint reader, 2D/3D GPU acceleration and in some cases thermometers or barometersAndroid manages all of this through APIs so that apps can take advantage of it.
Performance and processor: the brain of the mobile
If you want your Android to run smoothly, one of the critical points is the processor. These days, the benchmark in high-end devices is a SoC like the... Snapdragon 8 series, Google Tensor, or the latest generation ExynosThese chips offer more than enough power for demanding games, intensive multitasking, and artificial intelligence functions.
In more modest price ranges, you'll find Snapdragon 6 or 7 series processors, MediaTek Dimensity chips, and equivalents. Ideally, for comfortable use and with some future potential, you should opt for a phone with at least 6 or 8 GB of RAM and a modern mid-range or better processorThat will give you room for social media, browsing, email, photos, and moderate gaming without your phone dragging.
The combination of CPU and GPU, along with ART and Android optimizations, makes apps launch faster, the system switch between tasks smoothly, and reduces power consumption. Furthermore, the latest Material Design and system animations are designed to take full advantage of this power without sacrificing fluidity.
Display, design and visual experience
In terms of screen, a modern Android phone usually opts for panels AMOLED or OLED with Full HD+ resolution or higherRefresh rates of 90, 120, or even 144 Hz, and sizes ranging from 6 to 6.8 inches. This translates into vibrant colors, deep blacks, and a very pleasant experience when watching videos, playing games, or simply using your phone daily.
Android is a very flexible platform in terms of design. The system adapts to screens of different resolutions, formats and densitiesThis allows for the existence of compact, giant, book-type or clamshell-type mobile phones, and tablets that share much of the same base code.
Since Android 12, Google introduced the concept of Material You (Material 3)This is an evolution of its design language, where the system colors automatically adapt to the user's chosen wallpaper. This makes your phone look visually "custom-made," with buttons, quick settings, and menus that change color to match your style.
The interface is also highly customizable: you can alter icons, animations, transitions, widgets, home screens, and even the entire launcherThis, combined with manufacturers' customization layers (Samsung's One UI, Xiaomi's MIUI, etc.), allows the same Android system to have a very different appearance and behavior depending on the device.
Cameras and advanced multimedia features
Photography has become one of the deciding factors when choosing a mobile phone. Many high-end Android models offer Camera modules with multiple sensors: high-resolution main sensor, ultra-wide-angle lens, telephoto lens, macro lens and depth sensors, along with advanced night modes and 4K or even 8K video recording.
One of Android's greatest strengths is the combination of good hardware with a Image processing increasingly supported by artificial intelligenceDevices like the Google Pixel stand out for taking spectacular photos thanks to their software, even with camera hardware that, on paper, isn't always the most impressive.
In addition, Android has been integrating creative features such as Photo Sphere, which allows you to create 360-degree photos with your mobile device, or panoramic, portrait, slow motion, and timelapse modes. The multimedia experience is completed with the ability to stream content using technologies such as Miracast or Chromecast to compatible TVs and speakers.
In terms of audio, many mobile phones have abandoned the 3.5 mm jack, but in return they offer High-quality Bluetooth with advanced codecs, stereo speakers, and sound certificationsMusic, podcast, and video streaming apps take advantage of all of this effortlessly from the user.
Battery, charging and autonomy
Battery life is one of the biggest concerns. Most current Android phones have batteries of at least 4.000 mAh, although 4.500 or 5.000 mAh are very common. In mid-range and high-end devices. With good system optimization, this is usually enough for a full day of heavy use.
Android has been gaining tools to extend battery life: from power saving profiles to intelligent background app managementAdaptive brightness control and comprehensive statistics on what's using the most power. Added to all this is the role of ART, which helps run apps more efficiently.
In terms of charging, many manufacturers include proprietary technologies from fast wired and wireless chargingThese features allow you to recover a significant portion of the battery in a matter of minutes. Some models also offer reverse wireless charging to recharge accessories like headphones or watches directly from your phone.
Small details like displaying the battery percentage when the charger is connected, even with the device turned off, help users quickly see how much battery life is left before booting up the entire system. These are small things, but they're appreciated in everyday use.
Security, privacy, and criticisms of the ecosystem
In terms of security, Android has had to fight against the perception of being a system more exposed to malware that iOSStudies such as one by Symantec in 2013 showed fewer serious vulnerabilities in Android than in iOS, but also a much larger number of attacks targeting Google's system, partly due to its enormous market share.
Much of the malware, including the pre-installed malwareIt comes from third-party app stores or downloads from unofficial websites, so Google has been tightening controls in the Play Store with systems like Play Protect, automatic and manual reviews, and granular permissions so that the user can choose what each app can access.
Controversial behaviors related to privacy have also been discovered, such as temporary storage of location data when certain options are activated. Furthermore, leaks from 2013 and 2014 revealed that agencies like the NSA and GCHQ exploited data from popular apps and services like Google Maps for mass surveillance.
More recently, Google's decision to require that All developers who want to distribute apps on certified Android phones must register and verify their identityeven if they plan to offer their apps outside the Play Store. Groups like the Electronic Frontier Foundation and initiatives like Keep Android Open have criticized this, arguing that it could hinder sideloading, encourage censorship, and reinforce the official store's monopoly.
Despite these criticisms, both Google and manufacturers have been increasing the level of protection with Monthly or quarterly security updates, data encryption, biometric locking, app sandboxing, and greater transparency in permissionsAs always, part of the security also depends on the user and where they choose to install their applications.
Google Play, apps and ecosystem of services
Google Play is the official Android app and content storeFrom there you can download millions of apps, games, books, and other products, both free and paid, paying by credit card, PayPal, or gift cards. Google takes a percentage of each purchase, and the rest goes to the developer.
The Android ecosystem, however, is not limited to the Play Store. There are other stores such as Amazon Appstore, manufacturers' own stores, and free repositories like F-DroidAdditionally, it is possible to directly install APK files downloaded from the web, although this involves more risks and increasingly more security steps.
The system integrates seamlessly with Google services: Gmail for email, Google Calendar for your schedule, Google Maps for navigation and finding placesGoogle Drive for cloud storage, YouTube for video, Google Photos for photos, and Google Assistant as a voice assistant.
In the area of payments, Android has Google Pay (formerly Android Pay)This feature allows you to pay in stores using your mobile phone and NFC, provided the establishment accepts contactless payments. Simply link a card or payment method and authenticate with your fingerprint, PIN, or facial recognition.
All of this means that, as soon as you set up your Google account on a new phone, you'll have Your email, contacts, appointments, notes, photos, and documents synchronized in a matter of minutes, without having to manually copy files (you can follow a Guide to transferring data between mobile phones). It is one of the areas where Android offers a more "well-rounded" experience.
App development: from Java to Kotlin and beyond
If you're interested in the developer side, Android offers a fairly accessible environment. Traditionally, apps have been written in Java using the Android SDKHowever, for some years now Google has been strongly promoting Kotlin as a recommended language due to its greater modernity and security.
The official development environment is Android Studio, an IDE based on IntelliJ which includes device emulator, debugging tools, performance profiles, Material Design interface wizards, and support for multiple hardware configurations.
For those who prefer native code performance, there is the NDK for programming parts of the app in C or C++as well as cross-platform development frameworks (Flutter, React Native, etc.) and visual tools for beginners. Furthermore, projects like Qt or web-based frameworks allow code reuse across multiple platforms.
The applications are packaged in the format APK (Android Package), which can be easily installed on almost any device by enabling the corresponding option in settings (Enable USB debuggingand using a file explorer. This has historically facilitated distribution outside the official store, although with the new developer verification policies this process becomes somewhat more complicated.
Types of Android phones according to budget and needs
A huge advantage of Android is that there's a phone for almost every user profile and budget. We can divide the market into three major price rangeseach with its own strengths.
The mid-range, between 300 and 700 euros, is the sweet spot. Here you'll already see phones with good quality AMOLED screens, 6-8 GB (or more) of RAM, 128-256 GB of storageThey have quite capable cameras and good connectivity options, often with 5G. They're ideal if you want a phone that will last for several years without spending the money of a top-of-the-range model.
In the high and "ultra" range, starting at around 700-800 euros, are the flagship models: Spectacular displays with high refresh rates, the most powerful processors, plenty of memory, top-tier cameras with optical zoom, advanced stabilization, and computational photography modesalong with improved build quality, water resistance, and extras like faster wireless charging.
Current examples of well-balanced high-end Android phones include models like the Samsung Galaxy S24 Ultra, Google Pixel 8 Pro, Xiaomi's Series 14, OnePlus 12, and Motorola Edge 50 Ultra. They all offer a powerful blend of design, performance, camera, and software that appeals to demanding users who want the very best.
What to look for before choosing your next Android phone
With so much variety, it's important to have clear purchasing criteria. Beyond price, there are a number of Key features you absolutely should check when comparing Android phones.
The first thing is performance: look at the processor (family and generation) and the amount of RAM memory, which ideally should be 8 GB or more If you use many apps at the same time. For very basic use, 6 GB may be enough, but it's best not to go below that.
The screen is also crucial. An AMOLED panel or equivalent, with Full HD+ resolution and at least 90 Hz refresh rateIt will give you a very enjoyable experience both indoors and outdoors. If you consume a lot of multimedia content or play games, a good screen makes more of a difference than you might think.
When it comes to cameras, don't just focus on megapixels. Pay attention to whether the phone offers... Optical image stabilization (OIS), good night mode, useful ultra-wide angle, true telephoto lens And a well-designed camera app. Often, a sensor with fewer megapixels but better processing performs better than one full of marketing hype.
Don't forget to check the battery (capacity in mAh and fast charging type), the Android version it launches with and the number of years of promised updates by the manufacturer, as well as connectivity options such as 5G, Wi-Fi 6, NFC for payments, USB-C port and the possibility of expansion via microSD if you plan to fill the memory with photos and videos.
Given all of the above, it's easy to see why Android remains the favorite choice for most: it combines a mature and extremely flexible system with an overwhelming range of devices for every budget, a vast ecosystem of apps, and a constant pace of innovation in performance, cameras, design, smart features, and security. So, by choosing wisely, you can have an Android phone in your pocket that suits your lifestyle today and continues to perform reliably for many years to come.
