It’s 2021, and the smartphone industry is more competitive than ever. We have so many options available in the market that it can get a bit overwhelming for most users, which makes it difficult for them to narrow down to few smartphones. While you can check our top picks for the best Smartphones in 2021, but in this guide, we will focus on core rules which you can use to pick the right phone for you. In this guide, you will learn how to choose the best smartphone in 2021.

How to Choose the Best Smartphone – The science revealed!

When it comes to choosing the best smartphones, you can evaluate any smartphone on 5 basic pillars, and if one smartphone is rock solid on all 5 pillars, it’s considered the best smartphone. The 5 pillars of the best smartphone are

  • Display
  • Cameras
  • Battery
  • Build Quality
  • Specs (Specifications)

In the next few sections, we will explain how you can evaluate any modern smartphone-based on these 5 pillars, and at the end of this guide, you will be able to evaluate any smartphone and determine whether it’s best for you or not. Let’s get started.



The display is arguably one of the most important components of any smartphone, and you can evaluate the display of any smartphone based on three factors which are.

  • Screen Resolution – It’s the factor that basically decides how many pixels will be packed on your display, and it basically determines the quality of the display. The standard resolution these days is 1080p or FHD, and you should not settle for less. If you want to get a premium smartphone, make sure that you are getting QHD resolution on your smartphone.
  • Screen Technology – Back in the day, smartphones used to comes with poor-quality IPS Displays, but the technology has improved, and IPS Displays these days are very crisp. However, if you want the best quality display, you should consider OLED technology because it comes with accurate colors and deeper blacks. In a nutshell, if you are getting a mid-range smartphone, you can expect IPS or OLED Display. However, if you are getting a flagship smartphone, don’t settle for anything less than OLED Display.
  • Refresh Rate – Refresh Rate is basically the metric that tells how many times your screen will refresh within a second. Most smartphones come with a 60 Hz Refresh rate, and it will work for most people. However, if you are a gamer, you should consider display with a 90 Hz or 120 Hz Refresh rate as it will enhance the gaming experience for you.


Cameras Smartphone

Smartphones these days come with awesome cameras, and they can take great photos. When it comes to evaluating Cameras on any smartphone, you can evaluate any camera based on two factors which are.

  • Sensor Size – Sensor Size is basically the size of the sensor, and it’s presented in Mega Pixels, e.g., 12 MP, 50 MP, etc. If you want to use your smartphone for casual photography, you should consider a camera with 12 MP or better, such as 50 MP.
  • Aperture – No matter how big your sensor is, if it’s not getting enough light, you won’t be able to get better pictures, and it’s determined by the aperture. Many Chinese companies usually offer big sensors in their smartphones, but they usually come with an f/2.4 aperture, which means that the sensor won’t get enough light, and you will get poor-quality pictures. So, when you are choosing your camera on the smartphone, make sure that you get f/1.8, f/1.6, or better aperture for great photos.


Battery Best Smartphone

The battery is another very important component that makes or breaks the whole experience. If you get a phone with poor battery performance, you won’t enjoy it and spend a lot of time charging the device. Now when it comes to evaluating battery, you can evaluate it based on two factors which are.

  • Battery Size – Battery Size is the factor that will determine how long your battery will run. The normal standard these days is 4000 mAh, and you should not settle for less. However, if you get a smartphone with a 4500 mAh or higher capacity battery, you can get great battery life, and if you are a casual user, it can last a whole day.
  • Battery Charging Time – If you don’t want your phone to take hours to charge, it’s important that you pick a phone with quick charging. Luckily, most smartphones these days come with quick charging, and they can charge the battery within 90 to 120 minutes, depending on the size and technology. So, when you are choosing a smartphone, make sure that it has quick charging.



Last but not least, the Specs of the phone are also very important. When it comes to Specs, you can evaluate them on the following factors.

  • RAM : The standard RAM these days is 6 GB, and you should not settle for less than that. However, if you want to make your phone future-proof, make sure that you get 8 GB or higher RAM on your device.
  • Storage : The standard Storage these days is 64 GB, but it might not be enough for power users. So, if you go with 256 GB of storage, you won’t have to worry about the space for a long time.
  • Processor : The processor is arguably the most important factor which you must consider when buying a smartphone. If you are buying the latest smartphone, make sure that it comes with the latest processor. The quick way to find it out is the quick google search. If the processor is of last year, you should not get the phone unless you are getting it at a great price.


That’s all, folks. In this guide, you learned how to choose the best smartphone in 2021. You can use the above basic pillars to evaluate any smartphone, and you will end up picking the right smartphone. It’s the hidden science that is used by popular Tech Reviewers, and now you know that too. If you want to test your knowledge, you can check our guide where we have shared the Best 5G Smartphones, and you can use your knowledge to determine if these are the best phones or not! Let us know your thoughts in the comments.


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