Realme 12X (6GB RAM +128GB) vs Samsung Galaxy M21
Here you can compare Realme 12X (6GB RAM +128GB) and Samsung Galaxy M21. Comparing Realme 12X (6GB RAM +128GB) vs Samsung Galaxy M21 on Smartprix enables you to check their respective specs scores and unique features. It would potentially help you understand how Realme 12X (6GB RAM +128GB) stands against Samsung Galaxy M21 and which one should you buy The current lowest price found for Realme 12X (6GB RAM +128GB) is ₹12,499 and for Samsung Galaxy M21 is ₹11,999. The details of both of these products were last updated on Oct 18, 2026.
| Specification | Realme 12X (6GB RAM +128GB) | Samsung Galaxy M21 |
|---|---|---|
| OS | Android v14 | Android v10.0, upgradable to v11 |
| Rear Camera | 50 MP ƒ/1.8 (Wide Angle) 2 MP ƒ/2.4 (Depth Sensor) 22 mm, 1/5, Black & White Camera | 48 MP ƒ/2 (Wide Angle) 8 MP ƒ/2.2 (Ultra Wide) 5 MP ƒ/2.2 (Depth Sensor) |
| Battery | 5000 mAh | 6000 mAh, Li-Po Battery |
| Display | 6.72 inches, 1080 x 2400 pixels, 120 Hz | 6.4 inches, 1080 x 2340 pixels |
| CPU | 2.2 GHz, Octa Core Processor | 2.3 GHz, Octa Core Processor |
| Price | ₹12,499 | ₹11,999 |
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Overview
| Specs Score | 55 / 100 Better Specs | 50 / 100 |
| Display Resolution | 1080 x 2400 pixels Better Resolution | 1080 x 2340 pixels |
| Screen To Body Ratio | ~ 91.4% Less Bezels | ~ 84.2% |
| RAM | 6 GB More RAM | 4 GB |
| Storage | 128 GB More Storage | 64 GB |
| Front Camera | 8 MP | 20 MP Better Front Camera Resolution |
| Thickness | 7.69 mm Slimmer | 8.9 mm |
| Battery | 5000 mAh | 6000 mAh Bigger Battery |
| Unique Features | 5G No Reverse Charging | No FM Radio No |
General
| Model | 12x | Galaxy M21 |
| Sim Type | Dual Sim, GSM+GSM | Dual Sim, GSM+GSM |
| Dual Sim | Yes | Yes |
| Sim Size | Nano+Nano SIM | Nano+Nano SIM |
| Device Type | Smartphone | Smartphone |
| Release Date | April 02, 2024 | March 18, 2020 |
| In The Box | Realme 12x, Power Adapter, USB Type-C Cable, Important Product Information (Including the Warranty Card), Quick Guide, SIM Card Needle, Screen Protect Film, Protect Case |
Design
| Dimensions | 76.1 x 165.6 x 7.69 mm | 75.1 x 159 x 8.9 mm |
| Weight | 188 g | 188 g |
| Bezel less | No | |
| Colors | Twilight Purple, Woodland Green |
Display
| Type | Color IPS Screen (16.7M) | Color Super AMOLED Screen (16M Colors) |
| Touch | Yes, 240 Hz Touch Sampling Rate | Yes |
| Size | 6.72 inches, 1080 x 2400 pixels, 120 Hz | 6.4 inches, 1080 x 2340 pixels |
| Aspect Ratio | 20:9 | 19.5:9 |
| PPI | ~ 395 PPI | ~ 403 PPI |
| Screen to Body Ratio | ~ 91.4% | ~ 84.2% |
| Glass Type | Corning Gorilla Glass 3 | |
| Features | Brightness: 800nit (typ)/950nit (HBM） | 420 nits (peak) |
| Notch | Yes, Punch Hole | Yes, Water Drop Notch |
Memory
| RAM | 6 GB | 4 GB |
| Expandable RAM | Upto 6 GB Extra Virtual RAM | |
| Storage | 128 GB | 64 GB |
| Card Slot | Yes, upto 2 TB | Yes, upto 512 GB |
Connectivity
| GPRS | Yes | Yes |
| EDGE | Yes | Yes |
| 3G | Yes | Yes |
| 4G | Yes | Yes |
| 5G | Yes | |
| 5G Bands | NR: n1/n3/n5/n8/n28B/n40/n41(2535-2655MHz)/n77/n78 | |
| VoLTE | Yes, Dual Stand-By | Yes |
| Wifi | Yes, with wifi-hotspot | Yes, with wifi-hotspot |
| Wifi Version | Wi-Fi 5, Wi-Fi 4 & 802.11a/b/g/n/ac | |
| Bluetooth | Yes, v5.3, Support SBC, AAC, APTX, APTX-HD, LDAC, LHDC | Yes, v5.0 |
| USB | Yes, USB-C v2.0 | Yes, USB-C v2.0 |
| USB Features | USB Tethering, USB on-the-go, USB Charging, USB Storage | USB on-the-go, USB Charging |
Extra
| GPS | Yes, with GPS, Beidou, Glonass, Galileo, QZSS | Yes, with A-GPS, GLONASS, GALILEO, BDS |
| Fingerprint Sensor | Yes, Side | Yes, Rear |
| Face Unlock | Yes | Yes |
| Sensors | Geomagnetic Sensor, Light Sensor, Proximity Sensor, Gyro-meter, Acceleration Sensor | Accelerometer, Gyro Sensor, Geomagnetic Sensor, Proximity Sensor, Virtual Light Sensing |
| 3.5mm Headphone Jack | Yes | Yes |
| Splash Resistant | Yes | |
| IP Rating | IP54 | |
| Dust Resistant | Yes | |
| Extra Features | Dual Stereo Speakers, Air Gestures, Rainwater Smart Touch, VC Cooling System, LPDDR4 RAM, 5G + 5G Dual Mode, Hi-Res Audio Certification, Antenna Array Matrix System 2.0, Mini Capsule 2.0 |
Camera
| Rear Camera | 50 MP ƒ/1.8 (Wide Angle) 2 MP ƒ/2.4 (Depth Sensor) 22 mm, 1/5, Black & White Camera | 48 MP ƒ/2 (Wide Angle) 8 MP ƒ/2.2 (Ultra Wide) 5 MP ƒ/2.2 (Depth Sensor) |
| Auto Focus | Yes | Yes |
| Features | Photo, Video, Night, Street, Pro, Pano, Portrait, Time-Lapse, Slo-Mo, Text Scanner, 50M, Tilt-Shift, Movie, Dual-View Video | Panorama, HDR |
| Video Recording | 1080p @ 30 fps FHD | 4K @ 30 fps UHD, 1080p @ 30 fps FHD |
| Flash | Yes, LED | Yes, LED |
| Front Camera | 8 MP ƒ/2 (Wide Angle) 80° Punch Hole, Screen Flash | 20 MP ƒ/2 (Wide Angle) |
| Front Video Recording | 1080p @ 30 fps FHD | 1080p @ 30 fps FHD |
| Front Camera Features | Photo, Video, Pano, Portrait, Night, Time-Lapse, Dual-View Video | HDR |
Technical
| OS | Android v14 | Android v10.0, upgradable to v11 |
| Custom UI | Realme UI 5.0 | |
| Chipset | Mediatek Dimensity 6100 Plus | Samsung Exynos 9611 |
| CPU | 2.2 GHz, Octa Core Processor | 2.3 GHz, Octa Core Processor |
| Core Details | 2xCortex-A76@2.2 GHz & 6xCortex-A55@2.0 GHz | 4x2.3 GHz Cortex-A73 & 4x1.7 GHz Cortex-A53 |
| GPU | Mali-G57 MC2 | Mali-G72 MP3 |
| Java | No | No |
| Browser | Yes | Yes, supports HTML5 |
Multimedia
| Yes | Yes | |
| Music | MP3, AAC, APE, AMR, WAV, OGG, FLAC, WMA | MP3, M4A, 3GA, AAC, OGG, OGA, WAV, WMA, AMR, AWB, FLAC, MID, MIDI, XMF, MXMF, IMY, RTTTL, RTX, OTA |
| Video | AVI, 3GP, MP4, WMV, MKV, MOV, ASF, FLV | MP4, M4V, 3GP, 3G2, WMV, ASF, AVI, FLV, MKV, WEBM |
| FM Radio | No | Yes |
| Document Reader | Yes | Yes |
Battery
| Type | Non-Removable Battery | Non-Removable Battery |
| Size | 5000 mAh | 6000 mAh, Li-Po Battery |
| Fast Charging | Yes, 45W SUPERVOOC Charge | Yes, 15W Fast Charging |
| Reverse Charging | Yes |
Discuss
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