POCO X3 Review: Tremendous value for what you pay

POCO launched the POCO X3 smartphone in India back in September as the successor to POCO X2 that was launched earlier this year. Even tough it retains the 120Hz FHD+ screen, this has a faster Snapdragon 732G SoC, upgraded cameras, and 6000mAh battery with 33W fast charging.
The specifications look great on paper. Let us dive into the review to find out what the device has to offer.

Box Contents
Battery Life

Box Contents

  • POCO X3 6GB + 128GB in Cobalt Blue colour
  • 33W charger (5V-3A/9V-2A/9V-3A/12V-1.5A/12V-2.25A/20V-1.32A/11V-3A)
  • USB Type C Cable
  • SIM Ejector tool
  • Clear protective Case
  • Screen protector (Pre-installed)
  • User guide

Display, Hardware and Design

Starting with the display, the POCO X3 has a 6.67-inch Full HD+ display with a pixel resolution of 2400 × 1080 pixels, 20:9 aspect ratio 2.5D curved glass screen with gentle rounded corners and a pixel density of about 384 PPI, same as the predecessor. The display is bright, thanks to 400 nits brightness and 1500:1 contrast ratio and the colours are vibrant since it has 84% of NTSC color gamut. Sunlight legibility is good as well.

The main highlight of the display is its 120Hz display refresh rate and 240Hz touch sampling rate, which when enabled offers buttery smooth user experience especially when you are scrolling through the UI and when gaming. There is also a DynamicSwitch function allows the phone to save power by automatically switching between 50, 60, 90 and 120Hz depending on the use case and the format of content displayed on the screen. It also has HDR 10 support, which works for supported YouTube videos. The phone has about 91.25% screen-to-body ratio and comes with Corning Gorilla Glass 5 protection.

Under the display options there are different options to adjust colours and contrast based on your preference. There is also reading mode that lets you reduce the display’s blue light emission so it doesn’t cause eye strain when you are reading at night, but this will be disabled when you play HDR videos. The phone also has TUV Rheinland Low Blue Light Certification. There is Dark mode, similar to other MIUI phones. You also get an option to enable dark mode to apps that are installed, but it doesn’t look good on most apps.

Compared to the dual punch-hole screen in the POCO X2, this has a single punch-hole screen that houses a 20-megapixel camera, which doesn’t disturb when watching videos since it just occupies a small space. Above the display there is an earpiece on the top edge which also doubles up as a speaker. The earpiece also houses a tiny notification LED which glows in white colour. This comes in handy since the phone doesn’t have an AMOLED screen for always-on display feature. The phone also has the usual set of proximity and ambient light sensors as well as gyroscope and a magnetic sensor, otherwise known as a magnetometer.

Coming to the button placements, the volume rockers and the fingerprint sensor is present on the right side, which also doubles up as the power button. It is quick to unlock the phone. The Hybrid SIM slot is present on the left side. The secondary microphone and IR sensor are present on the top. On the bottom there is a 3.5mm audio jack, USB Type-C port, speaker grill, and primary microphone.

The phone features Z-axis linear vibration motor that enables over 150 custom vibration patterns across the UI for the best haptic experience, and the different can be felt when using the phone.

On the back there is a 64-megapixel camera along with an 13-megapixel 119-degree wide-angle lens, 2-megapixel depth sensor and a 2-megapixel macro camera on the side. This has slight camera bump due to the large sensor, but the camera lens is protected by a scratch-resistant glass. Even though the phone has a large screen, it is compact to hold. Compared to 3D glass back in the predecessor this has a plastic back so it is prone to scratches. It is also prone to fingerprints so it is recommended to use the bundled case.

The POCO X3 has IP53 ratings compared to P2i nano coating in the POCO X2, but you still can’t immerse in water since it is not IP67 or IP68 rated. The phone packs a 6000mAh built-in battery, making it the biggest battery ever on a POCO phone. It is a bit heavy at 225 grams, but the weight distribution is good.


The phone packs quad rear cameras, that includes a main 64-megapixel primary rear camera with single LED Flash, 1/1.73″ Sony IMX682 sensor, 0.8μm pixel size, f/1.89 aperture, 6P lens, has support for PDAF, EIS along with a secondary 13-megapixel camera with 119° ultra-wide angle lens with f/2.2 aperture, 1.12μm pixel size and a 2-megapixel depth sensor for portrait as well as 2-megapixel camera for 2cm macro with 1.75μm pixel size and f/2.4 aperture. It has a 20-megapixel front-facing camera with 0.8μm pixel size and f/2.2 aperture.

The camera UI is familiar with most smartphones running MIUI 12 with flash, HDR, AI, color modes (Normal, Vivid, Gid Vibes, Lime, Gourmet, Film, Amour, Movie, Soda, Sky blue, Nature, Blush, Childhood, Lilt, Travel, Rise, Cyberpunk, Black ice, B&W, and Classic) and Google Lens, on the top. Pressing the menu option shows camera frame, timer, movie frame, show gridlines, straighten, macro, tilt-shift, and Pro colour. There is a front camera toggle on the bottom along with option to select modes such as Pro mode to adjust white balance, focus, shutter speed (1/4000s to 30 seconds), ISO (100 to 6400) and option to select main, ultra-wide and macro lens. There is Video, Photo, Portrait and more option with, Night, 64MP, Short Video, Panorama, Documents, Vlog with seven different themes such as Activities, Dreams, Rhythm, Stop motion, Holidays, Travel and Memories, Slow motion, Time-lapse, Dual video, AI watermark, Long exposure and Clone. Beautify option for the front camera lets you adjust several features, in addition to smoothness. It also has RAW capture by default. It has Cam2API by default so you can side-load ported Google Camera APKs for advanced editing including RAW capture.

Coming to the image quality, daylight shots came out well with good dynamic range, thanks to the new Sony sensor. After pixel binning you get 16MP output. HDR shots are better with improved dynamic range, and macro shots are good, but 2x zoom from the main camera has better details compared to 2MP macro sensor even though you can go as close as 2cms. Wide-angle shots are good as well, thanks to the new 13MP sensor, and the portrait shots have good edge detection. 64MP mode that offers a lot of details, but some images can go up to 30MB in size. Even though there is no telephoto lens, it uses the software for offering 2x zoom, which might be handy sometimes.

Low-light shots are good, thanks to 4-in-1 Super Pixel technology that lets the camera’s sensor hardware combine 4 pixels into a single 1.6μm large pixel, and the night mode is even better making the images brighter offering more details, but there is noise. Images with flash are good and the flash is not overpowering. Daylight front camera shots are good, and low-light shots are decent. The output is 20MP in resolution, but the image size is around 4MB. Portrait front camera shots have decent edge detection due to lack of an additional camera.

Check out the camera samples (Click the image to view the full resolution sample.).

It can record videos at 4k resolution at 30 fps, 1080p at up to 60 fps, and it also has slow motion 720p resolution video recording at up to 960fps, but this should be 240fps converted into 960fps since the Snapdragon 732G officially supports only up to 240fps slow motion recording. You can also shoot 720p videos using the macro camera and 1080p 60 fps or 4K 30 fps videos using the ultra-wide camera. Check out the video samples below.

Software, UI and Apps

It runs Android 10 out of the box with MIUI 12 on top. It got October, 2020 security patch recently, and should get Android 11 update in the coming months. MIUI 12 that was introduced earlier this year brings several features including improved animation, Dark mode 2.0, Privacy improvements and more.  It has all the usual set of features such as Dual Apps, Second Space, App Lock, Quick Ball and more.

Inside the special features option there is Game Turbo, Quick replies feature that shows notification in a pop-up box when you are watching YouTube videos or in other apps, video toolbox, floating window and second space.

Apart from the usual set of utility apps, Google apps and Xiaomi’s own set of apps, it comes pre-loaded with Amazon Shopping, Facebook, and WPS office apps. It also asks for additional app installation during setup, which you can skip. You can easily uninstall these apps, but these come up when you reset the phone. Xiaomi is infamous for showing ads on its phones with MIUI. Even though there is personalized ads option during set up and recommendations in all the apps, you don’t get any ads in apps, similar to the other POCO, Redmi K20 series phones.

Since the phone has an infrared sensor for remote function, it comes with Mi Remote that lets you control your home appliances easily. It worked flawlessly with Airtel set-top box, Mi TV, AC and other appliances. It also supports A/V receiver, DVD Player, Projector, Camera and more.

Out of 6GB RAM, you get 5.6GB of usable RAM, and about 3GB of RAM is free when default apps are running in the background. Out of 128GB internal storage, you get about 104GB of free storage. Since this has UFS 2.1 storage, we got sequential read speeds of about 493MB/s.

Fingerprint sensor and Face unlock

The phone has a fingerprint sensor on the ride side, embedded into the power button. It immediately unlocks phone just by keeping your finger on the power button so that you don’t have to press it. This is more convenient compared to the rear-mounted fingerprint scanner and faster than the in-display fingerprint scanner. You can add up to 5 fingerprints. You can also use the fingerprint for app local and payments in apps. The phone also has face unlock, but it is not as secure as fingerprint since it can be unlocked with a photo.

Music Player, FM Radio and Multimedia

The Mi Music Player is the default music player with usual Xiaomi audio effects and equalizer. It also has FM Radio with recording. Audio through the speaker is loud. Since the phone has stereo speakers that includes 4cc-equivalent 1012 upper speaker and 1cc-equivalent 1216 lower speaker, audio is pretty loud. In high volume the back panel of the phone vibrates which is normal, so that you need not worry about it. Audio through earphones is good as well.

It has Widevine L1 support so you can play HD content on Netflix, Amazon Prime Video and other streaming apps without any issues.

Dual SIM and Connectivity

It supports 4G VoLTE for Reliance Jio, Airtel and other networks and support Dual 4G VoLTE that offers 4G in both the SIM cards at a time. There is Snapdragon X15 Cat-12 LTE modem. Other connectivity options include Dual-Band Wi-Fi 802.11 ac with dual antennas for better reception, VoWiFi / Wi-Fi calling support, Bluetooth 5.1 LE, NFC and GPS. It also has USB OTG support that lets you connect USB drives. Call quality is good, and we did not face any call drops and the earpiece volume was loud.

POCO X3’s body SAR is 0.615W/Kg (Distance:15mm), head SAR is at 0.747W/Kg, which is less than the POCO X2 and is well under the limit in India which is 1.6 W/kg (over 1 g).

Performance and Benchmarks

Coming to the performance, this is the first phone to be powered by an Octa-Core Snapdragon 732G 8nm Mobile Platform, which has 2 x Kryo 470 Performance CPUs (A76-based) clocked at up to 2.3GHz and 6x Kryo 470 Efficiency CPUs (A55-based) at up to 1.8GHz. It has Adreno 618 GPU with support for Open GL ES 3.2, Open CL 2.0, as well as Vulkan 1.1 graphics.

Thanks to slightly faster larger Kryo 470 cores based on new Cortex A76, this is faster than the Snapdragon 730G. The overclocked Adreno 618 GPU promises 15% improvement in graphics rendering compared to Snapdragon 730G and it also has Snapdragon Elite Gaming features.

We did not face any issues or frame drops in the graphic-intensive games. COD, Dead Trigger and Asphalt 9 were smooth without any issues.  Thanks to 120Hz refresh rate, gaming was super smooth in games that support it such as Dead Trigger 2, Real Racing 3 and more. It gets a bit warm on intensive gaming and 4G data use, but it doesn’t get too hot to handle. It has liquid cooling plus that combines an enlarged copper heat pipe with multiple layers of graphite to reduce the heat of the phone’s processor by up to an additional 6°C, according to the company. That said, check out some synthetic benchmark scores below.

As you can see from the benchmarks, the values are almost the same as Snapdragon 730G, and even the real-life performance is similar.

Battery life

Coming to the battery life, the 6000mAh (typical) built-in battery is bigger than the 4500mAh battery in the POCO X2. It lasts for a moer than a day even with heavy use with 120Hz refresh rate enabled, and with average use it lasts for two days, thanks to optimization in the MIUI 12. I got over 7 hours of screen on time with a day of use in 120Hz refresh rate. Even though it doesn’t mention 120Hz as adaptive, it automatically switches to 60Hz when you don’t need it, mainly to optimize the battery life. The phone has support for 33W fast charging and Middle Middle Tab (MMT) technology in which the battery receives the electric current from the middle and spreads it simultaneously to the top and bottom of the module, so it just takes about 1 hour for 0 to 100% and 0 to 50% takes 24 minutes using the bundled 33W Turbo charger.

It achieved One Charge Rating of 19 hours and 49 minutes in our battery test which is good for a phone with a 6000mAh battery. We tested it in 120Hz, which is default, so it should be better in 60Hz. Battery life is based on different factors such as software optimization and the processing power that requires to power the phone, so if the phone lasts for a day with heavy use, it is good.


At a starting price of Rs. 16999, the POCO X3 is another excellent value-for-money smartphone from POCO. The 120Hz LCD screen with minimal bezels is retained from the predecessor, the cameras have been improved, offers smooth performance and the huge battery offers brilliant life with support for fast charging. Glass body would have offered a premium look and feel, but it would increase the weight of the phone and add extra cost. Some might miss an AMOLED screen, but you have to compromise this for the 120Hz refresh rate that is rarely available in phones in the price range.


The realme 7 Pro is a good option if you need 65W fast charging, AMOLED display, in-display fingerprint scanner, but can compromise on the high refresh rate screen and a slightly smaller battery. The Galaxy M51 at a slightly higher price offers an AMOLED screen and a huge 7000mAh battery.


Priced at Rs. 16,999 for the 6GB RAM with 64GB storage version, Rs. 18,499 for the 6GB RAM with 128GB storage version and Rs. 19,999 for 8GB RAM with 128GB storage version, it is available from Flipkart. With the current bank offers during the festive sale, it is available even cheaper.


  • Large 120Hz HDR display is good
  • Good cameras
  • Smooth performance
  • Stereo speakers
  • Good battery life with 33W fast charging


  • Might be huge and bulky for some
  • Plastic body compared to glass body in the predecessor
  • Lacks dedicated microSD slot

Author: Srivatsan Sridhar

Srivatsan Sridhar is a Mobile Technology Enthusiast who is passionate about Mobile phones and Mobile apps. He uses the phones he reviews as his main phone. You can follow him on Twitter and Instagram