Xiaomi 15 vs Samsung Galaxy S21
Quick Comparison
Xiaomi 15 has better RAM than Samsung Galaxy S21. In terms of display resolution, Xiaomi 15 has better resolution of 2670 x 1200 than Samsung Galaxy S21 which has resolution of 2400 x 1080. Xiaomi 15 has more internal memory than Samsung Galaxy S21
| Name | Xiaomi 15 | Samsung Galaxy S21 |
| RAM | 12 GB | 8 GB |
|---|---|---|
| Display | 6.36 in | 6.2 in |
| Internal Memory | 512 GB | 128 GB |
| Battery | 5240 mAh | 4000 mAh |
| Camera | 50 MP + 50 MP + 50 MP Triple | 64 MP + 12 MP + 12 MP Triple |
| Price | Rs. 69999 | Rs. 69999 |
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Detailed Comparison
Price And Launch
The launch Date of the first phone is March 11, 2025. The cost of Xiaomi 15 is Rs. 69999. The launch Date of the second phone is January 14, 2021. The cost of Samsung Galaxy S21 is Rs. 69999.
Display comparison
Xiaomi 15 has larger screen size of 6.36 inches in comparison to Samsung Galaxy S21's 6.2 inch screen. Xiaomi 15 has OLED Screen type where as Samsung Galaxy S21 has Screen type. Xiaomi's phone has display density of 460 PPI & Samsung's phone has only 421 PPI display density. In terms of screen to body ratio, Xiaomi's phone has better screen to body ratio of ~ 90% than Samsung's phone ~ 87.2%. Xiaomi 15 has 20.5:9 aspect ratio where as Samsung Galaxy S21 has 20:9 aspect ratio.
Memory comparison
Xiaomi 15's larger 12 GB RAM is better for playing games and all with respect to Samsung Galaxy S21's lower 8 GB RAM. Xiaomi 15 has more Internal Memory (512 GB) than Samsung Galaxy S21 (128 GB).
Camera comparison
Xiaomi 15's 50 MP + 50 MP + 50 MP Triple Rear Camera outshines Samsung Galaxy S21's 64 MP + 12 MP + 12 MP Triple Rear Camera in terms of resolution. Xiaomi 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 S21's 10 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 10 version.
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Full Comparison
| Name | Xiaomi 15 | Samsung Galaxy S21 |
| General | ||
| Model | 15 | Galaxy S21 5G |
| 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 | March 11, 2025 | January 14, 2021 |
| In The Box | Mobile Phone, Adapter, USB Type-C Cable, SIM Eject Tool, Protective Case, Safety Information, Quick Start Guide and Warranty Card, Desiccant | |
| Design | ||
| Dimensions | 71.2 x 152.3 x 8.08 mm | 71.2 x 151.7 x 7.9 mm |
| Weight | 191 g | 169 g |
| Colors | White, Black, Green | |
| Display | ||
| Type | Color OLED Screen (68B) | Color Dynamic AMOLED 2X (16M Colors) |
| Touch | Yes, 300 Hz Touch Sampling Rate | Yes |
| Size | 6.36 inches, 1200 x 2670 pixels, 120 Hz | 6.2 inches, 1080 x 2400 pixels, 120 Hz |
| Aspect Ratio | 20.5:9 | 20:9 |
| PPI | ~ 460 PPI | ~ 421 PPI |
| Screen to Body Ratio | ~ 90% | ~ 87.2% |
| Glass Type | Corning Gorilla Glass Victus | |
| HDR Support | Yes, HDR10+, Dolby Vision | Yes, HDR10+ |
| Features | Peak Brightness: 3200 Nits Covering 25% Display Area, Dimming: DC Dimming, Original Color Pro, Pro HDR, Wet Touch Technology, HDR10, HDR10+, Dolby Vision, TÜV Rheinland Low Blue Light (Hardware Solution) Certified, TÜV Rheinland Flicker Free Certified, TÜV Rheinland Circadian Friendly Certified | Always-on Display, HDR10+ |
| Notch | Yes, Punch Hole | Yes, Punch Hole |
| Memory | ||
| RAM | 12 GB | 8 GB |
| RAM Type | LPDDR5X | |
| Storage | 512 GB | 128 GB |
| Storage Type | UFS 4 | UFS 3.1 |
| Connectivity | ||
| GPRS | Yes | Yes |
| EDGE | Yes | Yes |
| 3G | Yes | Yes |
| 4G | Yes | Yes |
| 5G | Yes | Yes |
| 5G Bands | SA: n1/2/3/5/7/8/12/20/25/26/28/38/40/41/48/66/75/77/78, NSA: n1/3/5/7/8/20/28/38/40/41/66/75/77/78 | |
| VoLTE | Yes, Dual Stand-By | Yes, Dual Stand-By |
| Vo5G | Yes | |
| Wifi | Yes, with wifi-hotspot | Yes, with wifi-hotspot |
| Wifi Version | Wi-Fi 6 | |
| Bluetooth | Yes, v6.0, A2DP, LE, aptX HD, aptX Adaptive | Yes, v5.0, A2DP, LE |
| USB | Yes, USB-C v3.2 | Yes, USB-C v3.2 |
| USB Features | USB on-the-go, USB Charging | USB on-the-go, USB Charging |
| IR Blaster | Yes | |
| Performance | ||
| AnTuTu Score | 2,349,482 (Total) (v10) 547,971 (CPU) 994,177 (GPU) 446,987 (Memory) 360,347 (UX) | |
| AnTuTu Storage Score | 168,399 | |
| Geekbench Score | 8,391 (Multi Core) (v6) 2,662 (Single Core) 18,093 (OpenCL) 24,464 (Vulkan) | |
| 3DMark Score | 6,101 (Wild Life Extreme) | |
| Camera Score | 147 (DxOMark) | |
| Speaker Score | 76 (Very Good) | |
| Battery Test Result | 16.15 hours | |
| Extra | ||
| GPS | GPS: L1+L5, Galileo: E1+E5a, GLONASS: G1, Beidou, QZSS: L1 + L5, NavIC: L5, A-GPS Supplementary Positioning, Electronic Compass, Wireless Network, Data Network, SAP | Yes, with A-GPS, GLONASS, BDS, GALILEO |
| Fingerprint Sensor | Yes, In Display | Yes, In Display |
| Face Unlock | Yes | Yes |
| Sensors | Proximity Sensor, Ambient Light Sensor, Accelerometer, Gyroscope, Electronic Compass, IR Blaster, Laser Focus Sensor, Barometer, Flicker Sensor, X-Axis Linear Vibration Motor | Accelerometer, Gyro, Proximity, Compass, Barometer |
| 3.5mm Headphone Jack | No | No |
| NFC | Yes | Yes |
| AI Features | Xiaomi HyperAI, AI Writing, AI Speech Recognition, AI Interpreter, AI Creativity Assistant, And More, Circle to Search With Google, Google Gemini | |
| Water Resistance | Yes, 1.5 m upto 30 min | Yes, 1.5 m upto 30 min |
| IP Rating | IP68 | IP68 |
| Dust Resistant | Yes | Yes |
| Extra Features | Xiaomi Wing-type IceLoop system | |
| Camera | ||
| Rear Camera | 50 MP ƒ/1.6 (Wide Angle) 23mm (wide), 1/1.31", 1.2µm, dual pixel PDAF, OIS 50 MP ƒ/2 (Telephoto) 60mm, PDAF (10cm - ∞), OIS, 3x optical zoom 50 MP ƒ/2.2 (Ultra Wide) 14mm, 115˚ | 12 MP ƒ/1.8 (Wide Angle) 64 MP ƒ/2 (Telephoto) 12 MP ƒ/2.2 (Ultra Wide) |
| Camera Sensor | Light Fusion 900 | |
| OIS | Yes | Yes |
| Auto Focus | Yes | |
| Features | Laser AF, Leica lens, dual-tone, Two Leica Photographic Styles (Leica Authentic Look, Leica Vibrant Look), Leica Filters, Leica Classic Shutter Sound, Leica Watermark, Xiaomi ProFocus (Motion Tracking Focus, Eye Tracking Focus and Motion Capture), Lightning Burst, Digital Zoom Up to 60x, HDR, Dynamic Shot, Portrait Mode, Master-Lens System (23mm, 35mm, 60mm, 75mm), Night Mode (Wide/Ultra Wide/Telephoto), 50MP Mode (Wide/Ultra Wide/Telephoto), Super Macro, Panorama, Long Exposure, Documents, Fastshot Mode, Supermoon, Pro Mode, Image Formats Captured: DNG, HEIF, JPEG, RAW Mode | Auto-HDR, Panorama |
| Video Recording | 8K @ 24/30 fps UHD, 4K @ 24/30/60 fps UHD, 1080p @ 30/60 fps FHD, 720p @ 30 fps HD | 8K @ 24 fps UHD, 4K @ 30/60 fps UHD, 1080p @ 240/30/60 fps FHD, 720p @ 960 fps HD |
| Flash | Yes, Dual LED | Yes, LED |
| Front Camera | 32 MP ƒ/2 (Wide Angle) Punch Hole | 10 MP ƒ/2.2 (Wide Angle) Punch Hole |
| Front Video Recording | 4K @ 30/60 fps UHD, 1080p @ 30/60 fps FHD | 4K @ 30/60 fps UHD, 1080p @ 30 fps FHD |
| Technical | ||
| OS | Android v15 | Android v10 |
| Custom UI | Xiaomi HyperOS 2 | |
| Chipset | Qualcomm Snapdragon 8 Elite | Samsung Exynos 2100 |
| CPU | 4.32 GHz, Octa Core Processor | 2.9 GHz, Octa Core Processor |
| Core Details | 2x Prime Core@4.32 GHz & 6x Performance Core@3.53 GHz | 1x2.9 GHz Cortex-X1 & 3x2.80 GHz Cortex-A78 & 4x2.2 GHz Cortex-A55 |
| GPU | Adreno 830 | Mali-G78 MP14 |
| Java | No | No |
| Browser | Yes | Yes |
| Multimedia | ||
| Yes | Yes | |
| Music | MP3, FLAC, APE, AAC, OGG, WAV, AMR, AWB | Yes |
| Video | MP4, MKV, WEBM, 3GP, TS, Supports HDR Display When Playing HDR10+, Dolby Vision, HDR Vivid Video Content | Yes |
| FM Radio | No | No |
| Speaker Type | Stereo | |
| Audio Features | Dolby Atmos | |
| Document Reader | Yes | Yes |
| Battery | ||
| Type | Non-Removable Battery | Non-Removable Battery |
| Size | 5240 mAh, Si/C | 4000 mAh, Li-Po Battery |
| Fast Charging | Yes, 90W HyperCharge | Yes, 25W Fast Charging |
| Wireless Charging | Yes, 50W HyperCharge | Yes, 15W |
| Reverse Charging | Yes | Yes, 4.5W |