Samsung Galaxy M21 (6GB RAM + 128GB) vs OnePlus 15
Quick Comparison
OnePlus 15 has better RAM than Samsung Galaxy M21 (6GB RAM + 128GB). In terms of display resolution, OnePlus 15 has better resolution of 2772 x 1272 than Samsung Galaxy M21 (6GB RAM + 128GB) which has resolution of 2340 x 1080. OnePlus 15 has more internal memory than Samsung Galaxy M21 (6GB RAM + 128GB)
| Name | Samsung Galaxy M21 (6GB RAM + 128GB) | OnePlus 15 |
| RAM | 6 GB | 12 GB |
|---|---|---|
| Display | 6.4 in | 6.78 in |
| Internal Memory | 128 GB | 256 GB |
| Battery | 6000 mAh | 7300 mAh |
| Camera | 48 MP + 8 MP + 5 MP Triple | 50 MP + 50 MP + 50 MP Triple |
| Price | Rs. 14499 | Rs. 72999 |
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Detailed Comparison
Price And Launch
The launch Date of the first phone is March 18, 2020. The cost of Samsung Galaxy M21 (6GB RAM + 128GB) is Rs. 14499. The launch Date of the second phone is October 27, 2025. The cost of OnePlus 15 is Rs. 72999.
Display comparison
Samsung Galaxy M21 (6GB RAM + 128GB) has screen size of 6.4 inches which falls short to OnePlus 15's 6.78 inch screen. Samsung Galaxy M21 (6GB RAM + 128GB) has Super AMOLED Screen type where as OnePlus 15 has LTPO AMOLED Screen type. OnePlus's phone has display density of 450 PPI & Samsung's phone has only 403 PPI display density. In terms of screen to body ratio, OnePlus's phone has better screen to body ratio of ~ 95.5% than Samsung's phone ~ 84.2%. Samsung Galaxy M21 (6GB RAM + 128GB) has 19.5:9 aspect ratio where as OnePlus 15 has 20/9 aspect ratio.
Memory comparison
OnePlus 15's larger 12 GB RAM is better for playing games and all with respect to Samsung Galaxy M21 (6GB RAM + 128GB)'s lower 6 GB RAM. OnePlus 15 has more Internal Memory (256 GB) than Samsung Galaxy M21 (6GB RAM + 128GB) (128 GB).
Camera comparison
OnePlus 15's 50 MP + 50 MP + 50 MP Triple Rear Camera outclasses Samsung Galaxy M21 (6GB RAM + 128GB)'s 48 MP + 8 MP + 5 MP Triple Rear Camera in terms of resolution. OnePlus 15 will be better choice if you're looking to click lot of selfies as it has better 32 MP Front Camera in comparison to Samsung Galaxy M21 (6GB RAM + 128GB)'s 20 MP Front Camera.
Technical comparison
Both the phones has Android Operating System but the first one runs on version 10.0 and the second one on 16 version.
Related Comparisons
Full Comparison
| Name | Samsung Galaxy M21 (6GB RAM + 128GB) | OnePlus 15 |
| General | ||
| Country of Origin | India | |
| Model | Galaxy M21 | CPH2745, CPH2747, PLK110 |
| Sim Type | Dual Sim, GSM+GSM | Dual Sim, GSM+GSM |
| Dual Sim | Yes | Yes |
| Sim Size | Nano+Nano SIM | Nano+Nano SIM |
| SAR | 1.17 W/kg (Head) 1 W/kg (Body) | |
| Device Type | Smartphone | Smartphone |
| Release Date | March 18, 2020 | October 27, 2025 |
| In The Box | OnePlus 15, Charger, USB data cable, SIM Ejector Tool, Protective Case, Quick Guide | |
| Design | ||
| Dimensions | 75.1 x 159 x 8.9 mm | 76.7 x 161.4 x 8.1 mm |
| Weight | 188 g | 211 g |
| Colors | Infinite Black, Ultra Violet, Sand Storm | |
| Display | ||
| Type | Color Super AMOLED Screen (16M Colors) | Color LTPO AMOLED Screen (1B Colors) |
| Touch | Yes | Yes |
| Size | 6.4 inches, 1080 x 2340 pixels | 6.78 inches, 1272 x 2772 pixels, 165 Hz |
| Aspect Ratio | 19.5:9 | 20/9 |
| PPI | ~ 403 PPI | ~ 450 PPI |
| Screen to Body Ratio | ~ 84.2% | ~ 95.5% |
| Glass Type | Corning Gorilla Glass 3 | Corning Gorilla Glass Victus 2 |
| Brightness | 800 nits (typ), 1800 nits (HBM) | |
| Features | 420 nits (peak) | Sun Display, Reduce White Point, Eye Comfort Reminders, Motion Cues, Minimum 1nit, Eye Comfort for Gaming |
| Notch | Yes, Water Drop Notch | Yes, Punch Hole |
| Memory | ||
| RAM | 6 GB | 12 GB |
| RAM Type | LPDDR5X Ultra | |
| Storage | 128 GB | 256 GB |
| Storage Type | UFS 4.1 | |
| Card Slot | Yes, upto 512 GB | No |
| Connectivity | ||
| GPRS | Yes | Yes |
| EDGE | Yes | Yes |
| 3G | Yes | Yes |
| 4G | Yes | Yes |
| 5G | Yes | |
| 5G Bands | 5G NR: n1/n2/n3/n5/n7/n8/n20/n26/n28/n38/n40/n41/n48/n66/n77/n78 | |
| VoLTE | Yes | Yes, Dual Stand-By |
| Vo5G | Yes | |
| Wifi | Yes, with wifi-hotspot | Yes, with wifi-hotspot |
| Wifi Version | Wi-Fi 7 (802.11be), Wi-Fi 6 (802.11ax), Wi-Fi 5 (802.11ac), Wi-Fi Display, WLAN Tethering, Wi-Fi 2.4GHz 2×2+Wi-Fi 5GHz 2×2 concurrent, Wi-Fi 5GHz 160MHz, 2×2 MIMO | |
| Bluetooth | Yes, v5.0 | Yes, v6.0, SBC, AAC, LDAC, aptX, aptX HD, aptX Adaptive, LHDC 5.0 |
| USB | Yes, USB-C v2.0 | Yes, USB-C v3.2 |
| USB Features | USB on-the-go, USB Charging | USB Tethering, USB on-the-go, USB Charging |
| IR Blaster | Yes | |
| Performance | ||
| AnTuTu Score | 4,187,391 (Total) (v10) | |
| Extra | ||
| GPS | Yes, with A-GPS, GLONASS, GALILEO, BDS | Dual band: GPS(L1+L5), GLONASS(G1), BeiDou(B1I+B1C+B2a), Galileo(E1+E5a), QZSS(L1+L5), NavIC(L5) |
| Fingerprint Sensor | Yes, Rear | Yes, In Display |
| Face Unlock | Yes | Yes |
| Sensors | Accelerometer, Gyro Sensor, Geomagnetic Sensor, Proximity Sensor, Virtual Light Sensing | Proximity, Ambient Light, Color Temperature, E-compass, Accelerometer, Gyroscope, In-display Ultrasonic Fingerprint Sensor, Hall Sensor, Laser Focusing Sensor, Spectral Sensor, Infrared Remote Control |
| 3.5mm Headphone Jack | Yes | No |
| NFC | Yes | |
| AI Features | Plus Mind, Gemini AI | |
| Water Resistance | Yes, 2 m upto 30 min | |
| IP Rating | IP66/IP68/IP69K/IP69 | |
| Dust Resistant | Yes | |
| Extra Features | OP Gaming Core, Touch Response Chip, G2 Wi-Fi Chip, Bypass Charging, 360° Cryo Velocity Cooling System | |
| Camera | ||
| Rear Camera | 48 MP ƒ/2 (Wide Angle) 8 MP ƒ/2.2 (Ultra Wide) 5 MP ƒ/2.2 (Depth Sensor) | 50 MP ƒ/1.8 (Wide Angle) Sensor: Sony's IMX906, Lens Quantity: 6P, Optical Image Stabilization: Yes, Aperture: ƒ/1.8, Field of View: 84°, Autofocus: Yes 50 MP ƒ/2.8 (Telephoto) Sensor: S5KJN5 with 3.5X optical zoom, 7x optical quality zoom, Lens Quantity: 4P, Optical Image Stabilization: Yes, Aperture: ƒ/2.8, Field of View: 30°, Autofocus: Yes, Ultra Res (digital) Zoom: up to 120x zoom 50 MP ƒ/2 (Ultra Wide) Sensor: OV50D, Lens Quantity: 6P, Aperture: ƒ/2.0, Field of view: 116°, Autofocus: Yes |
| OIS | Yes | |
| Auto Focus | Yes | Yes |
| Features | Panorama, HDR | Photo, Video, Portrait, Night, Panorama, SLO-MO, Long Exposure, Dual-view video, TIME-LAPSE, HI-RES, Underwater, Master, TEXT SCANNER, DOC SCANNER, TILT-SHIFT, PRO VIDEO |
| Video Recording | 4K @ 30 fps UHD, 1080p @ 30 fps FHD | 8K @ 30 fps UHD, 4K @ 120/60 fps UHD, 1080p |
| Flash | Yes, LED | Yes, LED |
| Front Camera | 20 MP ƒ/2 (Wide Angle) | 32 MP ƒ/2.4 (Wide Angle) Sensor: Sony IMX709, Lens Quantity: 5P, Focal Length: 21 mm equivalent, Autofocus: Supported, Aperture: f/2.4 Punch Hole, Screen Flash |
| Front Video Recording | 1080p @ 30 fps FHD | 4K @ 60 fps UHD, 1080p @ 60 fps FHD |
| Technical | ||
| OS | Android v10.0, upgradable to v11 | Android v16 |
| Custom UI | OxygenOS 16 | |
| Chipset | Samsung Exynos 9611 | Qualcomm Snapdragon 8 Elite Gen 5 |
| CPU | 2.3 GHz, Octa Core Processor | 4.6 GHz, Octa Core Processor |
| Core Details | 4x2.3 GHz Cortex-A73 & 4x1.7 GHz Cortex-A53 | 2x4.6 GHz Oryon V3 Phoenix L + 6x3.62 GHz Oryon V3 Phoenix M |
| GPU | Mali-G72 MP3 | Adreno 840 |
| Java | No | No |
| Browser | Yes, supports HTML5 | Yes |
| Multimedia | ||
| Supports | JPEG, PNG, BMP, GIF, WEB, HEIF, HEIC, DNG | |
| Yes | Yes | |
| Music | MP3, M4A, 3GA, AAC, OGG, OGA, WAV, WMA, AMR, AWB, FLAC, MID, MIDI, XMF, MXMF, IMY, RTTTL, RTX, OTA | MP3, AAC, AAC+, WMA, AMR-NB, AMR-WB, WAV, FLAC, APE, OGG, MID, M4A, IMY, AC3, EAC3, EAC3-JOC, AC4 |
| Video | MP4, M4V, 3GP, 3G2, WMV, ASF, AVI, FLV, MKV, WEBM | Dolby Vision, HDR10, HDR10+, +HLG, HDRViVid, MKV, MOV, MP4, H.265 (HEVC), AVI, WMV, TS, 3GP, ASF, FLV, WEB |
| FM Radio | Yes | No |
| Document Reader | Yes | Yes |
| Battery | ||
| Type | Non-Removable Battery | Non-Removable Battery |
| Size | 6000 mAh, Li-Po Battery | 7300 mAh, Si/C |
| Fast Charging | Yes, 15W Fast Charging | Yes, 120W SUPERVOOC Charging |
| Wireless Charging | Yes, 50W AIRVOOC | |
| Reverse Charging | Yes, 10W | |
| Reverse Wireless Charging | Yes, 5W | |