Xiaomi 15 (China 256GB/12GB) vs Samsung Galaxy A21 (SM-A215W)
Side by side comparison between Xiaomi 15 vs Samsung Galaxy A21 phones, differences, pros, cons and full specifications. What's the better?
,
6.36"
AMOLED
AMOLED
1200x2670
50
MP
MP
32mp
12GB
RAM
RAM
Octa-core
5400
mAh
mAh
(Non removable)
vs
6.5"
PLS
PLS
720x1600
16
MP
MP
13mp
3GB
RAM
RAM
Octa-core
4000
mAh
mAh
(Non removable)
What's the better phone? Xiaomi 15 (China 256GB/12GB)
The phonemore's choice is much more technical than personal. Therefore, you shouldn't only consider this. Our goal is to help you, but what's important to us may not be important to you. You decide which one is the best! Comment!
35 Advantages 
5 Advantages | 19 Common items in both devices |
| PDAF: phase detection autofocus |
| HDR photo/video on both cameras / HDR photo on both cameras |
| Capacitive |
| Multitouch |
| Accelerometer |
| Ambient light sensor |
| Compass |
| +12 specs and more in the table below |
Check the comparison table below for more items that are not evaluated in comparison score above.
Highlight differences Clear highlight📱 Model features | ||
| Xiaomi 15 (China 256GB/12GB) | Galaxy A21 (SM-A215W) | |
| Model | Xiaomi 15 (China 256GB/12GB) | Galaxy A21 (SM-A215W) |
| Other model names | Xiaomi 15 24129PN74C | Galaxy A21 SM-A215WZKAXAC (Bell Mobility) |
| Country or region available |  China |  Canada |
| Brand | Xiaomi | Samsung |
| Release date | 10/29/2024 | 6/26/2020 |
| Depth | 8.4 millimeters (0.33 inches) | 8.1 millimeters (0.32 inches) |
| Size (width x height) | 71.2 x 152.3 millimeters (2.8 x 6 in) | 76.7 x 167.8 millimeters (3.02 x 6.61 in) |
| Weight | 192 grams (6.72 ounces) | 193 grams (6.76 ounces) |
| Build, materials | Aluminum body, glass front | Plastic body, glass front |
| Protection against water and others | IP68 certified: water-resistant up to 1.5 meters for 30min and dust-resistant | Not supported |
📲 Display | ||
| Xiaomi 15 (China 256GB/12GB) | Galaxy A21 (SM-A215W) | |
| Display type | LTPO AMOLED | TFT PLS |
| Screen size | 6.36" inches | 6.5" inches |
| Screen-to-body ratio | ~90% (screen-to-body ratio) | ~79.3% (screen-to-body ratio) |
| Display resolution | 1200x2670 pixels (20:9) | 720x1600 pixels (20:9) |
| Touchscreen | Capacitive Multitouch 10-points | Capacitive Multitouch |
| Pixel density (dot pitch) | 460 PPI | 270 PPI |
| Colors | 68 billion | 16 million |
| Scratch-resistant glass | Dragon Crystal Glass | Not supported |
| Refresh rate | 120Hz | 60Hz |
| Display features | 3200nits[peak] Dolby Vision/HDR10+ Touch Sampling Rate: 300Hz | Not supported |
🤖 Operating System | ||
| Xiaomi 15 (China 256GB/12GB) | Galaxy A21 (SM-A215W) | |
| System version | Android 15 | Android 10 |
| Firmware update | feature not registered | feature not registered |
| User Interface | HyperOS 2 | feature not registered |
⚙️ Processor | ||
| Xiaomi 15 (China 256GB/12GB) | Galaxy A21 (SM-A215W) | |
| Chipset | 64bit: Qualcomm Snapdragon 8 Elite (SM8750-AB) (3nm) | 64bit: MediaTek Helio P35 (MT6765) (12nm) |
| CPU | Octa-core, 2 processors: 2x 4.32GHz Oryon V2 Phoenix L (Dual-core) 6x 3.53GHz Oryon V2 Phoenix M (Hexa-core) | Octa-core, 2 processors: 4x 2.3GHz ARM Cortex-A53 (Quad-core) 4x 1.8GHz ARM Cortex-A53 (Quad-core) |
| GPU graphical controller | Qualcomm Adreno 830 (1100MHz) | PowerVR GE8320 MP2 (680MHz) |
| Performance (benchmark) | AnTuTu: 2534643 (v10) Geekbench: 9419 (v6) | feature not registered |
💽 Memory and storage | ||
| Xiaomi 15 (China 256GB/12GB) | Galaxy A21 (SM-A215W) | |
| RAM memory | 12GB LPDDR5X | 3GB LPDDR3 |
| Internal storage | 256GB (220GB available) UFS 4.0 | 32GB (20GB available) eMMC 5.1 |
| External storage | Not supported | Until 512GB microSD, microSDXC (dedicated slot) |
📶 Mobile networks | ||
| Xiaomi 15 (China 256GB/12GB) | Galaxy A21 (SM-A215W) | |
| Dual-SIM | Dual-SIM Standby - Call active on one sim card | Not supported |
| SIM card | 2 slots (Dual-SIM) nano-SIM (4FF) + e-SIM | 1 slot (Single-SIM) nano-SIM (4FF) |
| Maximum Download / Upload | 3000/1024 Mbps | 150/50 Mbps |
| Network technology | 2G, 3G, 4G, 5G | 2G, 3G, 4G |
| Frequency, bands | Expand band details Collapse details | |
| GSM MHz band | Quad-Band 850/900/1800/1900 | Quad-Band 850/900/1800/1900 |
| Primary 2G network | GSM 850/900/1800/1900 | GSM 850/900/1800/1900 |
| Primary 3G network | UMTS 850/900/1700/1900/2100 | UMTS 850/900/1700/1900/2100 |
| Primary 4G network | LTE Cat20 (1, 2, 3, 4, 5, 7, 8, 12, 17, 18, 19, 20, 26, 28, 66) TD-LTE (34, 38, 39, 40, 41, 42, 48) VoLTE | LTE Cat4 (1, 2, 3, 4, 5, 7, 12, 13, 17, 20, 66, 71) TD-LTE (38, 40, 41) VoLTE |
| Primary 5G network | SA/NSA/Sub6 (1, 2, 3, 5, 12, 20, 26, 28, 38, 40, 41, 48, 66, 77, 78, 80, 81, 83, 84, 89) | Not supported |
| Primary data network | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A, SA/NSA, Sub6 | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE |
| Secondary 2G network | GSM 850/900/1800/1900 | Not supported |
| Secondary 3G network | UMTS 850/900/1700/1900/2100 | Not supported |
| Secondary 4G network | LTE Cat20 (1, 2, 3, 4, 5, 7, 8, 12, 17, 18, 19, 20, 26, 28, 66) TD-LTE (34, 38, 39, 40, 41, 42, 48) VoLTE | Not supported |
| Secondary data network | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A, SA/NSA, Sub6 | Not supported |
📷 Camera | ||
| Xiaomi 15 (China 256GB/12GB) | Galaxy A21 (SM-A215W) | |
| Back camera (main camera) | (triple camera) 50 megapixels 50MP telephoto f/2.060mm1/2.76"0.64µmPDAFOIS2.6x-optical-zoom 50MP ultrawide f/2.214mm115°1/2.76"0.64µm | (quad camera) 16 megapixels 8MP ultrawide f/2.21/4.0"1.12µm 2MP macro f/2.4 2MP depth f/2.4 |
| Main camera resolution | 8160x6120 pixels | 4608x3456 pixels |
| Video recording (primary) | 8K UHD (7680x4320) 30 fps | Full HD (1920x1080) 30 fps |
| Flash | Dual-LED flash | LED flash |
| Focal aperture | f/1.6 (aperture) | f/1.8 (aperture) |
| Focal length | 23mm (lens) | feature not registered |
| Sensor size | 1/1.31" inches | 1/3.06" inches |
| Pixel size | 1.2µm pixel | 1µm pixel |
| Autofocus | PDAF: phase detection autofocus | PDAF: phase detection autofocus |
| Touch focus | Supported | Supported |
| Image stabilization | OIS: Optical stabilization | EIS: Digital stabilization |
| Zoom | Digital and optical zoom | Only digital zoom |
| Face/smile detection | Face detection, Smile detection | Face detection, Smile detection |
| BSI sensor | Supported | Not supported |
| HDR | HDR photo/video on both cameras | HDR photo on both cameras |
| Camera extras | 8K@24/30fps (HDR) 4K@24/30/60fps (HDR10+, 10-bit Dolby Vision HDR, 10-bit LOG) 1080p@30/60/120/240/960fps 720p@1920fps Leica Summilux | feature not registered |
📸 Front camera | ||
| Xiaomi 15 (China 256GB/12GB) | Galaxy A21 (SM-A215W) | |
| Front camera (secondary) | 32 megapixels | 13 megapixels |
| Front camera resolution | 6528x4896 pixels | 4128x3096 pixels |
| Video recording (secondary) | 4K UHD (3840x2160) | Full HD (1920x1080) |
| Front flash | Not supported | Not supported |
| Focal aperture | f/2.0 (aperture) | f/2.0 (aperture) |
| Focal length | 21mm (lens) | feature not registered |
| Sensor size | 1/3.14" inches | feature not registered |
| Pixel size | 0.7µm pixel | 1.12µm pixel |
🔉 Sound and multimedia | ||
| Xiaomi 15 (China 256GB/12GB) | Galaxy A21 (SM-A215W) | |
| Loudspeaker | Stereo sound 24-bit/192kHz Dolby Atmos Hi-Res | Supported |
| Active noise cancellation | 4 microphones | 2 microphones or more |
| Radio | Not supported | FM |
| TV | Not supported | Not supported |
| Video formats | MP4, H.265, H.264, H.263, XviD, MKV | MP4, H.265, H.264, H.263, XviD, MKV |
| Audio formats | MP3, WAV, WMA, eAAC+, FLAC | MP3, WAV, WMA, eAAC+, FLAC |
🔌 Connectivity | ||
| Xiaomi 15 (China 256GB/12GB) | Galaxy A21 (SM-A215W) | |
| USB | USB 3.2 Type-C, USB OTG On-The-Go | USB 2.0 Type-C reversible connector |
| Audio output | Type-C reversible connector | 3.5mm jack |
| TV output | USB Type-C (reversible) | Not supported |
| Bluetooth | 6.0 + A2DP/LE | 5.0 + A2DP/LE |
| WiFi | 802.11 a/b/g/n/ac/ax/be [wifi7/6E/6] (2.4GHz, 5GHz, 6GHz) + MIMO WiFi Direct, hotspot | 802.11 a/b/g/n/ac [wifi5] (2.4GHz, 5GHz) + MIMO WiFi Direct, hotspot |
| DLNA | Not supported | Not supported |
| GPS | A-GPS, GeoTagging, GLONASS, GALILEO, BeiDou, QZSS | A-GPS, GeoTagging, GLONASS |
| NFC | Supported | Supported |
| Infrared port | Supported | Not supported |
🧭 Sensors | ||
| Xiaomi 15 (China 256GB/12GB) | Galaxy A21 (SM-A215W) | |
| Sensors | Accelerometer Ambient light sensor Barometer Compass Face unlock 2D Fingerprint sensor (under display) Gyroscope Proximity sensor | Accelerometer Ambient light sensor Compass Face unlock 2D Fingerprint sensor (rear-mounted) Gyroscope Proximity sensor |
| Vibrating alert | Supported | Supported |
🔋 Battery | ||
| Xiaomi 15 (China 256GB/12GB) | Galaxy A21 (SM-A215W) | |
| Battery type | Li-Si: lithium-silicon (Non removable) | LiPo: li-ion polymer (Non removable) |
| Battery capacity | 5400 mAh | 4000 mAh |
| Charger, watts | 90W Wired fast charging Reverse charging by cable Quick Charge 3+ USB Power Delivery 3.0 | 15W Wired fast charging |
| Inductive / wireless charging | 50W Qi Wireless charging (Qi/WPC) 10W Reverse wireless charging | Not supported |
| Talk time autonomy | feature not registered | feature not registered |
| Standby | feature not registered | feature not registered |
➕ Other features | ||
| Xiaomi 15 (China 256GB/12GB) | Galaxy A21 (SM-A215W) | |
| Call control | Voice dialing, Voice recorder, Voice commands | Voice dialing, Voice recorder, Voice commands |
| Messaging | SMS (T9), MMS, E-mail, Push mail | SMS (T9), MMS, E-mail, Push mail |
| Hands-free calling | Supported | Supported |
| Video calling | Supported | Supported |
| Ringtones | Polyphonic and customized | Polyphonic and customized |
| Web browser | HTML, XHTML, HTML5 | HTML, XHTML, HTML5 |
| Antenna | Internal antenna | Internal antenna |
| Qwerty physical keyboard | Not supported | Not supported |
| Miscellaneous | • Colors: Black, White, Green, Lilac, Liquid Silver • Xiaomi HyperAI | • Colors: Black • One UI 2.0 |
☢️ Radiation rate | ||
| Xiaomi 15 (China 256GB/12GB) | Galaxy A21 (SM-A215W) | |
| SAR 1.6W/kg (USA, Mexico, etc.) | feature not registered | 0.6W/kg (head), 1.27W/kg (body) |
| SAR 2W/kg (Europe, UK, etc.) | 0.99W/kg (head), 1W/kg (body) | feature not registered |