Xiaomi Redmi 15 5G (8GB RAM + 256GB) vs Samsung Galaxy M21 2021 (6GB RAM + 128GB)
Quick Comparison
Xiaomi Redmi 15 5G (8GB RAM + 256GB) has better RAM than Samsung Galaxy M21 2021 (6GB RAM + 128GB). Xiaomi Redmi 15 5G (8GB RAM + 256GB) has more internal memory than Samsung Galaxy M21 2021 (6GB RAM + 128GB)
| Name | Xiaomi Redmi 15 5G (8GB RAM + 256GB) | Samsung Galaxy M21 2021 (6GB RAM + 128GB) |
| RAM | 8 GB | 6 GB |
|---|---|---|
| Display | 6.9 in | 6.4 in |
| Internal Memory | 256 GB | 128 GB |
| Battery | 7000 mAh | 6000 mAh |
| Camera | 50 MP Dual | 48 MP + 8 MP + 5 MP Triple |
| Price | Rs. 16998 | Rs. 12999 |
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Detailed Comparison
Price And Launch
The launch Date of the first phone is August 01, 2025. The cost of Xiaomi Redmi 15 5G (8GB RAM + 256GB) is Rs. 16998. The launch Date of the second phone is July 21, 2021. The cost of Samsung Galaxy M21 2021 (6GB RAM + 128GB) is Rs. 12999.
Display comparison
Samsung Galaxy M21 2021 (6GB RAM + 128GB) has screen size of 6.4 inches which falls short to Xiaomi Redmi 15 5G (8GB RAM + 256GB)'s 6.9 inch screen. Xiaomi Redmi 15 5G (8GB RAM + 256GB) has IPS Screen type where as Samsung Galaxy M21 2021 (6GB RAM + 128GB) has Super AMOLED Screen type. Samsung's phone has display density of 403 PPI & Xiaomi's phone has only 374 PPI display density. In terms of screen to body ratio, Samsung's phone has better screen to body ratio of ~ 84.2% than Xiaomi's phone ~ 83.2%. Xiaomi Redmi 15 5G (8GB RAM + 256GB) has 20.6:9 aspect ratio where as Samsung Galaxy M21 2021 (6GB RAM + 128GB) has 19.5:9 aspect ratio.
Memory comparison
Xiaomi Redmi 15 5G (8GB RAM + 256GB)'s larger 8 GB RAM is better for playing games and all with respect to Samsung Galaxy M21 2021 (6GB RAM + 128GB)'s lower 6 GB RAM. Xiaomi Redmi 15 5G (8GB RAM + 256GB) has more Internal Memory (256 GB) than Samsung Galaxy M21 2021 (6GB RAM + 128GB) (128 GB).
Camera comparison
Xiaomi Redmi 15 5G (8GB RAM + 256GB)'s 50 MP Dual Rear Camera outclasses Samsung Galaxy M21 2021 (6GB RAM + 128GB)'s 48 MP + 8 MP + 5 MP Triple Rear Camera in terms of resolution. Samsung Galaxy M21 2021 (6GB RAM + 128GB) will be better choice if you're looking to click lot of selfies as it has better 20 MP Front Camera in comparison to Xiaomi Redmi 15 5G (8GB RAM + 256GB)'s 8 MP Front Camera.
Technical comparison
Both the phones has Android Operating System but the first one runs on version 15 and the second one on 11 version.
Related Comparisons
Full Comparison
| Name | Xiaomi Redmi 15 5G (8GB RAM + 256GB) | Samsung Galaxy M21 2021 (6GB RAM + 128GB) |
| General | ||
| Country of Origin | India | |
| Model | 15 5G | Galaxy M21 2021 |
| Sim Type | Dual Sim, GSM+GSM (Hybrid Slot) | Dual Sim, GSM+GSM |
| Dual Sim | Yes | Yes |
| Sim Size | Nano+Nano SIM | Nano+Nano SIM |
| Device Type | Smartphone | Smartphone |
| OS Updates | 2 years | |
| Security Updates | 4 years | |
| Release Date | August 01, 2025 | July 21, 2021 |
| In The Box | Mobile Phone * 1, Adapter * 1, USB Type-C cable * 1, SIM Eject Tool * 1, Quick Start Guide, & Warranty Card * 1, Safety Information * 1 | |
| Design | ||
| Dimensions | 80.45 x 168.48 x 8.4 mm | 75.1 x 159 x 9 mm |
| Weight | 217 g | 192 g |
| Colors | Sandy Purple, Frosted White, Midnight Black | |
| Display | ||
| Type | Color IPS Screen (16M Colors) | Color Super AMOLED Screen (16M Colors) |
| Touch | Yes, 288 Hz Touch Sampling Rate | Yes |
| Size | 6.9 inches, 1080 x 2340 pixels, 144 Hz | 6.4 inches, 1080 x 2340 pixels, 60 Hz |
| Aspect Ratio | 20.6:9 | 19.5:9 |
| PPI | ~ 374 PPI | ~ 403 PPI |
| Screen to Body Ratio | ~ 83.2% | ~ 84.2% |
| Glass Type | Corning Gorilla Glass 3 | |
| Brightness | 850nits Peak Brightness | |
| Features | TÜV Rheinland Circadian Friendly, TÜV Rheinland flicker free, TÜV Rheinland Low Blue light | 420 nits (peak) |
| Notch | Yes, Punch Hole | Yes, Water Drop Notch |
| Memory | ||
| RAM | 8 GB | 6 GB |
| RAM Type | LPDDR4X | |
| Storage | 256 GB | 128 GB |
| Storage Type | UFS 2.2 | |
| Card Slot | Yes, (Hybrid Slot), upto 1 TB | Yes, upto 512 GB |
| Connectivity | ||
| GPRS | Yes | Yes |
| EDGE | Yes | Yes |
| 3G | Yes | Yes |
| 4G | Yes | Yes |
| 5G | Yes | |
| 5G Bands | SA: n1/n3/n5/n8/n28/n40/n78, NSA: n1/n3/n40/n78/n8 | |
| VoLTE | Yes | Yes |
| Wifi | Yes, with wifi-hotspot | Yes, with wifi-hotspot |
| Bluetooth | Yes, v5.1, A2DP, LE | Yes, v5.0 |
| USB | Yes, USB-C | Yes, USB-C v2.0 |
| USB Features | USB on-the-go, USB Charging | USB on-the-go, USB Charging |
| IR Blaster | Yes | |
| Extra | ||
| GPS | Yes, with A-GPS, Glonass, Beidou | Yes, with A-GPS, Glonass, Beidou, Galileo |
| Fingerprint Sensor | Yes, Side | Yes, Rear |
| Face Unlock | Yes | Yes |
| Sensors | Ambient Light Sensor, Proximity Sensor (Virtual), E Compass, Accelerometer | Accelerometer, Gyro Sensor, Geomagnetic Sensor, Proximity Sensor, Virtual Light Sensing |
| 3.5mm Headphone Jack | Yes | |
| AI Features | Circle to Search, Gemini AI, AI Erase | |
| Splash Resistant | Yes | |
| IP Rating | IP64 | |
| Dust Resistant | Yes | |
| Extra Features | Hydro Touch | |
| Camera | ||
| Rear Camera | 50 MP ƒ/1.75 (Wide Angle) | 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 | AI Sky, AI Erase, Classic Film Filters | 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/2.2 (Wide Angle) Punch Hole, Screen Flash | 20 MP ƒ/2 (Wide Angle) |
| Front Video Recording | 1080p @ 30 fps FHD | 1080p @ 30 fps FHD |
| Technical | ||
| OS | Android v15 | Android v11 |
| Custom UI | HyperOS 2 | |
| Chipset | Qualcomm Snapdragon 6s Gen3 | Samsung Exynos 9611 |
| CPU | 2.3 GHz, Octa Core Processor | 2.3 GHz, Octa Core Processor |
| Core Details | 2x2.3 GHz Cortex-A78 & 6x2.0 GHz Cortex-A55 | 4x2.3 GHz Cortex-A73 & 4x1.7 GHz Cortex-A53 |
| GPU | Adreno 619 | Mali-G72 MP3 |
| Java | No | No |
| Browser | Yes, supports HTML5 | Yes, supports HTML5 |
| Multimedia | ||
| Yes | Yes | |
| Music | Yes | MP3, M4A, 3GA, AAC, OGG, OGA, WAV, WMA, AMR, AWB, FLAC, MID, MIDI, XMF, MXMF, IMY, RTTTL, RTX, OTA |
| Video | Yes | MP4, M4V, 3GP, 3G2, WMV, ASF, AVI, FLV, MKV, WEBM |
| FM Radio | Yes | Yes |
| Speaker Type | Bottom Firing Loud Speaker | |
| Audio Features | Dolby Certified, 200% Super Volume | |
| Document Reader | Yes | Yes |
| Battery | ||
| Type | Non-Removable Battery | Non-Removable Battery |
| Size | 7000 mAh, Si-C EV-Grade Technology | 6000 mAh, Li-Po Battery |
| Fast Charging | Yes, 33W | Yes, 15W Fast Charging |
| Reverse Charging | Yes, 18W | |
| Talk Time | 49 hours | |
| Music Playback Time | 131 hours | |