Xiaomi 12 (128GB) vs Samsung Galaxy A15 (SM-A155F/DSN 256GB)
Side by side comparison between Xiaomi 12 vs Samsung Galaxy A15 phones, differences, pros, cons and full specifications. What's the better?
,
6.28"
AMOLED
AMOLED
1080x2400
50
MP
MP
32mp
8GB
RAM
RAM
Octa-core
4500
mAh
mAh
(Non removable)
vs
6.5"
AMOLED
AMOLED
1080x2340
50
MP
MP
13mp
8GB
RAM
RAM
Octa-core
5000
mAh
mAh
(Non removable)
What's the better phone? Xiaomi 12 (128GB)
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!
24 Advantages 
10 Advantages | 18 Common items in both devices |
| Only digital zoom |
| PDAF: phase detection autofocus / Autofocus |
| HDR photo/video on both cameras / HDR photo on both cameras |
| (front) Full HD (1920x1080) |
| Capacitive |
| Multitouch |
| Accelerometer |
| +11 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 12 (128GB) | Galaxy A15 (SM-A155F/DSN 256GB) | |
| Model | Xiaomi 12 (128GB) | Galaxy A15 (SM-A155F/DSN 256GB) |
| Other model names | Xiaomi 12 5G 2201123G (Global), 2201123C (China) | Galaxy A15 4G LTE SM-A155F/Dual-SIM NFC |
| Country or region available |  (Global, International) | (Global, International) |
| Brand | Xiaomi | Samsung |
| Release date | 12/31/2021, Announced: 12/28/2011 | 12/16/2023, Announced: 12/11/2023 |
| Depth | 8.2 millimeters (0.32 inches) | 8.4 millimeters (0.33 inches) |
| Size (width x height) | 69.9 x 152.7 millimeters (2.75 x 6.01 in) | 76.8 x 160.1 millimeters (3.02 x 6.3 in) |
| Weight | 180 grams (6.3 ounces) | 200 grams (7 ounces) |
| Build, materials | Aluminum frame, glass front/back | Plastic body, glass front |
| Protection against water and others | Not supported | Not supported |
📲 Display | ||
| Xiaomi 12 (128GB) | Galaxy A15 (SM-A155F/DSN 256GB) | |
| Display type | AMOLED | Super AMOLED |
| Screen size | 6.28" inches | 6.5" inches |
| Screen-to-body ratio | ~89.2% (screen-to-body ratio) | ~84.3% (screen-to-body ratio) |
| Display resolution | 1080x2400 pixels (20:9) | 1080x2340 pixels (19.5:9) |
| Touchscreen | Capacitive Multitouch 10-points | Capacitive Multitouch |
| Pixel density (dot pitch) | 419 PPI | 396 PPI |
| Colors | 1 billion | 16 million |
| Scratch-resistant glass | Gorilla Glass Victus | Not supported |
| Refresh rate | 120Hz | 90Hz |
| Display features | 1100nits[peak] Dolby Vision/HDR10+ | 800nits[peak] |
🤖 Operating System | ||
| Xiaomi 12 (128GB) | Galaxy A15 (SM-A155F/DSN 256GB) | |
| System version | Android 12 | Android 14 |
| Firmware update | feature not registered | feature not registered |
| User Interface | MIUI 13 | One UI 6.1 |
⚙️ Processor | ||
| Xiaomi 12 (128GB) | Galaxy A15 (SM-A155F/DSN 256GB) | |
| Chipset | 64bit: Qualcomm Snapdragon 8 Gen 1 (SM8450) (4nm) | 64bit: MediaTek Helio G99 (6nm) |
| CPU | Octa-core, 3 processors: 1x 3GHz ARM Cortex-X2 (Single-core) 3x 2.5GHz ARM Cortex-A710 (Triple-core) 4x 1.79GHz ARM Cortex-A510 (Quad-core) | Octa-core, 2 processors: 2x 2.2GHz ARM Cortex-A76 (Dual-core) 6x 2GHz ARM Cortex-A55 (Hexa-core) |
| GPU graphical controller | Qualcomm Adreno 730 (818MHz) | ARM Mali-G57 MC2 |
| Performance (benchmark) | AnTuTu: 985115 (v9) Geekbench: 3652 (v5.1) GFXBench: 75fps (ES 3.1 onscreen) | AnTuTu: 317085 (v9), 375321 (v10) Geekbench: 1928 (v5), 1936 (v6) |
💽 Memory and storage | ||
| Xiaomi 12 (128GB) | Galaxy A15 (SM-A155F/DSN 256GB) | |
| RAM memory | 8GB LPDDR5 | 8GB LPDDR4X |
| Internal storage | 128GB (101GB available) UFS 3.1 | 256GB (236GB available) eMMC 5.1 |
| External storage | Not supported | Until 1TB microSD, microSDXC (hybrid slot/shares the same SIM-2 slot) |
📶 Mobile networks | ||
| Xiaomi 12 (128GB) | Galaxy A15 (SM-A155F/DSN 256GB) | |
| Dual-SIM | Dual-SIM Standby - Call active on one sim card | Dual-SIM Standby - Call active on one sim card (hybrid slot/shares the same microSD slot) |
| SIM card | 2 slots (Dual-SIM) nano-SIM (4FF) | 2 slots (Dual-SIM) nano-SIM (4FF) |
| Maximum Download / Upload | 2000/1024 Mbps | 300/150 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 | CDMA 800, GSM 850/900/1800/1900 | GSM 850/900/1800/1900 |
| Primary 3G network | CDMA2000 1xEV-DO UMTS 800/850/900/1700/1900/2100 | UMTS 850/900/2100 |
| Primary 4G network | LTE Cat20 VoLTE Global version: LTE (1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 32, 66) TD-LTE (38, 39, 40, 41, 42, 48) China version: LTE (1, 2, 3, 4, 5, 7, 8, 12, 17, 18, 19, 26) TD-LTE (34, 38, 39, 40, 41, 42) | LTE Cat7 (1, 3, 5, 7, 8, 20, 28) TD-LTE (38, 40, 41) VoLTE |
| Primary 5G network | Global version: SA/NSA (1, 3, 5, 7, 8, 20, 28, 38, 40, 41, 66, 77, 78, 79) China version: SA/NSA (1, 3, 5, 8, 28, 41, 77, 78, 79) | Not supported |
| Primary data network | GPRS, EDGE, CDMA2000 EV-DO Rev 0, CDMA2000 EV-DO Rev A, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A, SA/NSA | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A |
| Secondary 2G network | GSM 850/900/1800/1900 | GSM 850/900/1800/1900 |
| Secondary 3G network | UMTS 800/850/900/1700/1900/2100 | UMTS 850/900/2100 |
| Secondary 4G network | LTE Cat20 VoLTE Global version: LTE (1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 32, 66) TD-LTE (38, 39, 40, 41, 42, 48) China version: LTE (1, 2, 3, 4, 5, 7, 8, 12, 17, 18, 19, 26) TD-LTE (34, 38, 39, 40, 41, 42) | LTE Cat7 (1, 3, 5, 7, 8, 20, 28) TD-LTE (38, 40, 41) VoLTE |
| Secondary data network | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A, SA/NSA | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A |
📷 Camera | ||
| Xiaomi 12 (128GB) | Galaxy A15 (SM-A155F/DSN 256GB) | |
| Back camera (main camera) | (triple camera) 50 megapixels 13MP ultrawide f/2.412mm123°1/3.06"1.12µm 5MP telephoto macro f/2.450mmAF | (triple camera) 50 megapixels 5MP ultrawide f/2.2 2MP macro f/2.4 |
| Main camera resolution | 8160x6120 pixels | 8160x6120 pixels |
| Video recording (primary) | 8K UHD (7680x4320) 24 fps | Full HD (1920x1080) 30 fps |
| Flash | Dual-LED flash | LED flash |
| Focal aperture | f/1.9 (aperture) | f/1.8 (aperture) |
| Focal length | 26mm lens | feature not registered |
| Sensor size | 1/1.56" inches | feature not registered |
| Pixel size | 1µm pixel | feature not registered |
| Autofocus | PDAF: phase detection autofocus | Autofocus |
| Touch focus | Supported | Supported |
| Image stabilization | OIS: Optical stabilization | EIS: Digital stabilization |
| Zoom | Only digital zoom | Only digital zoom |
| Face/smile detection | Face detection, Smile detection | Face detection, Smile detection |
| BSI sensor | Supported | Supported |
| HDR | HDR photo/video on both cameras | HDR photo on both cameras |
| Camera extras | 4K@60fps 1080p@960fps Sony IMX707 Leica optics | 1080p@30fps 720p@120fps (slow motion) |
📸 Front camera | ||
| Xiaomi 12 (128GB) | Galaxy A15 (SM-A155F/DSN 256GB) | |
| Front camera (secondary) | 32 megapixels | 13 megapixels |
| Front camera resolution | 6528x4896 pixels | 4128x3096 pixels |
| Video recording (secondary) | Full HD (1920x1080) | Full HD (1920x1080) |
| Front flash | Not supported | Not supported |
| Focal aperture | f/2.5 (aperture) | f/2.0 (aperture) |
| Focal length | 26mm lens | feature not registered |
| Sensor size | feature not registered | feature not registered |
| Pixel size | 0.7µm pixel | feature not registered |
🔉 Sound and multimedia | ||
| Xiaomi 12 (128GB) | Galaxy A15 (SM-A155F/DSN 256GB) | |
| Loudspeaker | Stereo sound with dual speakers 24-bit/192kHz Dolby Atmos Tuned by Harman Kardon | Mono sound (not stereo) |
| Active noise cancellation | 2 microphones or more | 2 microphones or more |
| Radio | Not supported | FM (RDS) |
| 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 12 (128GB) | Galaxy A15 (SM-A155F/DSN 256GB) | |
| USB | USB 2.0 Type-C, USB OTG On-The-Go | USB 2.0 Type-C, USB OTG On-The-Go |
| Audio output | Type-C reversible connector | 3.5mm jack |
| TV output | USB Type-C (reversible) | USB Type-C (reversible) |
| Bluetooth | 5.2 + A2DP/LE | 5.3 + A2DP/LE |
| WiFi | 802.11 a/b/g/n/ac/ax [wifi6] (2.4GHz, 5GHz) + 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, NavIC | A-GPS, GeoTagging, GLONASS, GALILEO, BeiDou, QZSS |
| NFC | Supported | Supported |
| Infrared port | Supported | Not supported |
🧭 Sensors | ||
| Xiaomi 12 (128GB) | Galaxy A15 (SM-A155F/DSN 256GB) | |
| Sensors | Accelerometer Ambient light sensor Compass Face unlock Fingerprint sensor (under display) Gyroscope Virtual proximity sensor | Accelerometer Ambient light sensor Compass Face unlock Fingerprint sensor (side-mounted) Virtual proximity sensor |
| Vibrating alert | Supported | Supported |
🔋 Battery | ||
| Xiaomi 12 (128GB) | Galaxy A15 (SM-A155F/DSN 256GB) | |
| Battery type | LiPo: li-ion polymer (Non removable) | LiPo: li-ion polymer (Non removable) |
| Battery capacity | 4500 mAh | 5000 mAh |
| Charger, watts | 67W Wired fast charging Reverse charging by cable Quick Charge 4 USB Power Delivery 3.0 | 25W Wired fast charging |
| Inductive / wireless charging | 50W Qi wireless charging 10W Reverse wireless charging | Not supported |
| Talk time autonomy | feature not registered | 51 hours (2.1 days) |
| Standby | feature not registered | feature not registered |
➕ Other features | ||
| Xiaomi 12 (128GB) | Galaxy A15 (SM-A155F/DSN 256GB) | |
| 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: Gray, Blue, Purple, Green • LiquidCool | • Colors: Brave Black, Optimistic Blue, Magical Blue, Personality Yellow |
☢️ Radiation rate | ||
| Xiaomi 12 (128GB) | Galaxy A15 (SM-A155F/DSN 256GB) | |
| SAR 1.6W/kg (USA, Mexico, etc.) | 1.09W/kg (head), 0.91W/kg (body) | feature not registered |
| SAR 2W/kg (Europe, UK, etc.) | 0.6W/kg (head), 1W/kg (body) | 0.42W/kg (head), 1.29W/kg (body) |