Xiaomi Poco F3 vs Realme 12x - Detailed Phone Comparison

Detailed Comparison

Specification
Realme 12x
Realme 12x
Realme

General

Launch Date March 27, 2021 April 7, 2024
Release Year 2021 2024

Physical

Volume 97.55 cm³ 99.56 cm³
Screen Size to Weight Ratio 3.4 "/g 3.51 "/g
Weight 196 g 190 g
Height 163.7 mm 165.6 mm
Width 76.4 mm 76.1 mm
Thickness 7.8 mm 7.9 mm
Foldable Design No No
Available Colors
  • Arctic White
  • Night Black
  • Deep Ocean Blue
  • Moonlight Silver
  • Glowing Black
  • Feather Green

Display

Screen Size 6.67 " 6.67 "
Resolution 1080 x 2400 720 x 1604
Aspect Ratio 20:9 20:9
Screen-to-Body Ratio 85.9 % 85.1 %
Pixel Density 395 PPI 264 PPI
Refresh Rate 120 Hz 120 Hz
Typical Brightness N/A N/A
HBM Brightness N/A 625 nits
Peak Brightness 1300 nits N/A

Hardware

Battery Capacity per Screen Area 101.60 mAh/in² 112.39 mAh/in²
Battery Density 46.33 mAh/cm³ 50.22 mAh/cm³
Battery Capacity 4520 mAh 5000 mAh
NFC Support Yes Yes
Chipset Qualcomm SM8250-AC Snapdragon 870 5G (7 nm) Mediatek Dimensity 6100+ (6 nm)
CPU Octa-core (1x3.2 GHz Kryo 585 & 3x2.42 GHz Kryo 585 & 4x1.80 GHz Kryo 585) Octa-core (2x2.2 GHz Cortex-A76 & 6x2.0 GHz Cortex-A55)
GPU Adreno 650 Mali-G57 MC2

Connectivity

USB Version 2.0 2.0
OTG Support 1
DisplayPort
DisplayPort Version N/A N/A
USB Features USB Type-C 2.0, OTG USB Type-C 2.0

Software

Operating System Android Android
Initial OS Version 11 14
Maximum OS Version 13

Comparison Summary

Smartphone Comparison: Xiaomi Poco F3 vs. Realme 12x

1. Specifications Comparison

FeatureXiaomi Poco F3Realme 12xPractical Impact
Design
Dimensions163.7 × 76.4 × 7.8 mm165.6 × 76.1 × 7.9 mmRealme 12x is slightly taller, but otherwise similar in size; minimal difference in hand feel.
Weight196g190gRealme 12x is slightly lighter, potentially more comfortable for prolonged use.
Display
Size6.67"6.67"Identical screen size; both provide similar viewing area.
Resolution1080x2400720x1604Xiaomi Poco F3 offers much sharper images and text; noticeably crisper visuals for browsing, media, and gaming.
PPI395264Xiaomi Poco F3 has a significantly higher pixel density, resulting in greater clarity and detail.
TechnologyAMOLEDIPS LCDXiaomi Poco F3 provides superior colors, deeper blacks, better contrast; ideal for HDR content, darker themes, and outdoor visibility due to higher contrast ratio.
Refresh Rate120Hz120HzBoth offer smooth scrolling and animations; the 120 Hz refresh rate improves the user experience compared to 60 Hz displays.
Brightness1300 nits0 nitsXiaomi Poco F3 is much brighter and has much better visibility in bright sunlight; this is a significant advantage for outdoor usage.
Performance
ChipsetQualcomm Snapdragon 870 (7 nm)Mediatek Dimensity 6100+ (6 nm)Xiaomi Poco F3 offers much faster processing for demanding tasks; apps load faster, better multitasking, and superior gaming performance.
AnTuTu Score800,216442,599Xiaomi Poco F3 demonstrates much higher performance in benchmarks; noticeable difference in overall system responsiveness and gaming.
GPUAdreno 650Mali-G57 MC2Xiaomi Poco F3's Adreno 650 offers significantly better graphics performance; better frame rates in games and smoother graphics in demanding apps.
Battery
Capacity4520mAh5000mAhRealme 12x offers slightly longer battery life due to larger capacity; likely a minor difference, depending on usage.
Charging33W Fast Charging15W Fast ChargingXiaomi Poco F3 charges significantly faster, reducing downtime; much more convenient for quick top-ups.
Camera
Standard Camera48MP, f/1.7950MP, f/1.8Realme 12x has a slightly higher resolution but Xiaomi Poco F3 has a wider aperture; Xiaomi Poco F3 may perform slightly better in low light due to aperture, but the difference isn't substantial.
Selfie Camera20MP, f/2.458MP, f/2.1Xiaomi Poco F3 produces higher-resolution selfies and has a wider aperture, potentially capturing more details, but may not perform as well in low light as the other phone.
Depth CameraN/A2MP, f/2.4Realme 12x has a dedicated depth camera, but the practical benefit is often limited, particularly with 2MP, it may enhance bokeh in portrait mode but not drastically.
Video4K@30fps, 1080p up to 960fps1080p@30fps, up to 120fpsXiaomi Poco F3 supports much higher video resolutions, excellent for content creators; offers a much wider range of high frame rate recording options.
Software
OSAndroid 11 (upgradable to 13)Android 14Realme 12x has a more recent version of Android out of the box, and potentially longer software support (although max version is not specified for the Realme).
Connectivity
Wi-FiWi-Fi 6, Dual BandWi-Fi 5, Dual BandXiaomi Poco F3 has newer, faster Wi-Fi standard, especially beneficial for high-bandwidth applications; Wi-Fi MiMO supported.
Bluetooth5.1, LE5.2, LERealme 12x uses newer Bluetooth version, which may be slightly more efficient, but the practical impact is minimal, depending on usage.
GPSGPS, A-GPS, GLONASS, Beidou, Galileo, GPS (L1+L5), BeiDou (B1), Galileo (E1+E5a), BeiDou (B2), NavIC SystemGPS, A-GPS, GLONASS, Beidou, GalileoXiaomi Poco F3 supports more satellite systems, leading to improved location accuracy and faster lock-on times, particularly in urban or challenging environments.
Storage
Internal128 GB/256 GB256 GB/512 GBRealme 12x has higher maximum storage capacity; better for users with extensive media libraries or numerous apps.
RAM6 GB/8 GB12 GBRealme 12x offers more RAM, better multitasking capability, more efficient background app management for heavy users.
ExpandableNoNoNeither phone allows expandable storage; it is crucial to choose a model with the right capacity for your needs.
Audio
QualityDolby Atmos, Hi-Res Audio, Stereo SpeakersHi-Res Audio, Stereo SpeakersXiaomi Poco F3 offers enhanced spatial audio and better audio separation, resulting in a slightly more immersive listening experience; Dolby Atmos provides a wider soundstage.
Security
FeaturesSide-mounted fingerprint sensorSide-mounted fingerprint sensorBoth provide secure and convenient biometric authentication; response time and accuracy would be the only practical differences.
Build Quality
Screen ProtectionCorning Gorilla Glass 5UnknownXiaomi Poco F3 uses a superior screen protection technology, leading to better scratch and damage resistance.
SensorsBiometric, Accelerometer, Compass, Gyroscope, Ultrasonic proximity virtualBiometric, Accelerometer, Compass, Gyroscope, Magnetometer, ProximityXiaomi Poco F3 includes Ultrasonic proximity virtual, and the Realme 12x adds a magnetometer and basic proximity sensor; differences in sensors may have minor usability impacts.

2. Key Differences Analysis

Xiaomi Poco F3 Advantages:

  • Superior Display: AMOLED panel with much higher resolution, brightness, and pixel density providing significantly better visual quality and outdoor visibility.
  • Significantly Higher Performance: The Snapdragon 870 chipset delivers much faster app loading, multitasking, and gaming performance, outperforming the Dimensity 6100+ by a large margin.
  • Faster Charging: 33W charging is significantly faster than Realme 12x's 15W, allowing for quicker battery top-ups.
  • Advanced Camera Capabilities: 4K video recording, along with higher frame-rate options, offers more flexibility for video capture.
  • Enhanced Audio: Dolby Atmos provides a more immersive audio experience.
  • Better Connectivity: Wi-Fi 6 offers faster speeds, lower latency, and better performance in crowded networks, and additional GPS support.
  • Screen Protection: Corning Gorilla Glass 5 provides more protection against scratches and damage.

Realme 12x Advantages:

  • Larger Battery: 5000mAh battery provides a slightly longer battery life, though this will vary.
  • Higher RAM: 12GB of RAM may be better for heavy multitasking and demanding games and could result in more efficient background app management.
  • More Storage: Higher maximum internal storage (up to 512GB) provides more room for media and apps.
  • Newer Android Version: Android 14 out of the box, potentially longer software support.

Trade-offs:

  • Poco F3: Older OS version out of the box, slightly less battery capacity.
  • Realme 12x: Significantly inferior display, much slower chipset, slower charging, lower video recording capabilities.

3. User Profiles & Recommendations

Xiaomi Poco F3 is Ideal For:

  • Power Users & Gamers: Users who prioritize performance, need fast app loading, smooth multitasking, and high frame rates for gaming.
  • Media Consumers: Users who watch a lot of videos or consume high-quality media benefit greatly from the superior display.
  • Outdoor Users: The higher screen brightness is crucial for visibility in bright sunlight.
  • Content Creators: The ability to shoot 4K video and high frame rates is ideal for those who regularly create video content.
  • Users seeking premium features at a mid-range price: The Poco F3 excels in providing high-end features at a reasonable price.

Realme 12x is Ideal For:

  • Budget-Conscious Users: Users seeking a more affordable option with acceptable everyday performance.
  • Basic Smartphone Users: Those who primarily use their phone for calls, browsing, social media, and light media consumption.
  • Users who need maximum storage: Users with extensive media libraries and apps who prioritize lots of storage.
  • Users who want the newest Android software out-of-the-box: The Realme comes with Android 14.

Use Cases:

  • Xiaomi Poco F3: Gaming, streaming 4K movies, outdoor photography, recording vlogs in 4K, heavy multitasking.
  • Realme 12x: Browsing social media, everyday use such as messaging and calls, casual gaming, long battery for traveling, using for storage.

4. Decision Framework

Key Questions for Buyers:

  1. What is your primary use case for the phone? (Gaming, content creation, everyday browsing, battery life, storage capacity)
  2. How important is display quality to you? (Sharpness, brightness, colors)
  3. What is your budget? (These phones will differ in price, and this will affect user priorities).

Scenario-Based Recommendations:

  • Scenario 1: Performance & Visuals are Priority: If you prioritize a high-performance phone with a superior display for gaming, video, and overall responsiveness, choose the Xiaomi Poco F3, despite being the older device.
  • Scenario 2: Budget & Battery Life: If you're on a tight budget and prioritize longer battery life, basic performance is sufficient, and extra storage is desired, then Realme 12x might be suitable.
  • Scenario 3: Balanced Usage with High Storage: If you're looking for a balanced experience with a large storage capacity and a newer operating system, the Realme 12x could be considered, though it sacrifices significantly in display and performance.

My Choice

I would choose the Xiaomi Poco F3. While it's an older phone, the superior AMOLED display, significantly faster Snapdragon 870 processor, faster charging, and 4K video recording capabilities make it a much better choice for my priorities. The Realme 12x's advantages in battery and storage aren't enough to offset the F3's strengths in areas that directly impact user experience, like visual quality, speed, and overall fluidity. For me, a better display and significantly better performance outweighs the benefits of a slightly bigger battery and newer OS. The better screen visibility, powerful chipset, and enhanced audio of the F3 create a noticeably more premium experience overall.

Emily Harper
Emily Harper

Technology Insights Specialist

Dedicated technology writer specializing in mobile device analysis and technology communication. Expert at translating complex smartphone features into clear, actionable insights for diverse audiences.

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Bridging technical complexity with engaging, accessible narratives.