Samsung Galaxy Axiom (SCH-R830) vs Xiaomi 15 (China 512GB/12GB)
Side by side comparison between Samsung Galaxy Axiom vs Xiaomi 15 phones, differences, pros, cons and full specifications. What's the better?
,
4"
AMOLED
AMOLED
480x800
5
MP
MP
1.3mp
1GB
RAM
RAM
Dual-core
2100
mAh
mAh
(Removable)
vs
6.36"
AMOLED
AMOLED
1200x2670
50
MP
MP
32mp
12GB
RAM
RAM
Octa-core
5400
mAh
mAh
(Non removable)
What's the better phone? Xiaomi 15 (China 512GB/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!
5 Advantages 
34 Advantages | 13 Common items in both devices |
| Super AMOLED / LTPO AMOLED |
| Autofocus / PDAF: phase detection autofocus |
| Capacitive |
| Multitouch |
| Accelerometer |
| Ambient light sensor |
| Proximity sensor |
| +6 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 | ||
| Galaxy Axiom (SCH-R830) | Xiaomi 15 (China 512GB/12GB) | |
| Change model | ||
| Model | Galaxy Axiom (SCH-R830) | Xiaomi 15 (China 512GB/12GB) |
| Other model names | Galaxy Axiom R830 for US Cellular | Xiaomi 15 24129PN74C |
| Country or region available |  USA |  China |
| Brand | Samsung | Xiaomi |
| Release date | 11/28/2012 | 10/29/2024 |
| Depth | 11.9 millimeters (0.47 inches) | 8.4 millimeters (0.33 inches) |
| Size (width x height) | 63.8 x 121.7 millimeters (2.51 x 4.79 in) | 71.2 x 152.3 millimeters (2.8 x 6 in) |
| Weight | 136 grams (4.76 ounces) | 192 grams (6.72 ounces) |
| Build, materials | Plastic body, glass front | Aluminum body, glass front |
| Protection against water and others | Not supported | IP68 certified: water-resistant up to 1.5 meters for 30min and dust-resistant |
📲 Display | ||
| Galaxy Axiom (SCH-R830) | Xiaomi 15 (China 512GB/12GB) | |
| Display type | Super AMOLED | LTPO AMOLED |
| Screen size | 4" inches | 6.36" inches |
| Screen-to-body ratio | ~58.7% (screen-to-body ratio) | ~90% (screen-to-body ratio) |
| Display resolution | 480x800 pixels | 1200x2670 pixels (20:9) |
| Touchscreen | Capacitive Multitouch | Capacitive Multitouch 10-points |
| Pixel density (dot pitch) | 233 PPI | 460 PPI |
| Colors | 16 million | 68 billion |
| Scratch-resistant glass | Not supported | Dragon Crystal Glass |
| Refresh rate | feature not registered | 120Hz |
| Display features | feature not registered | 3200nits[peak] Dolby Vision/HDR10+ Touch Sampling Rate: 300Hz |
🤖 Operating System | ||
| Galaxy Axiom (SCH-R830) | Xiaomi 15 (China 512GB/12GB) | |
| System version | Android 4.0.4 Ice Cream Sandwich ICS | Android 15 |
| Firmware update | feature not registered | feature not registered |
| User Interface | feature not registered | HyperOS 2 |
⚙️ Processor | ||
| Galaxy Axiom (SCH-R830) | Xiaomi 15 (China 512GB/12GB) | |
| Chipset | 32bit: Qualcomm Snapdragon S4 MSM8960 Lite (28nm) | 64bit: Qualcomm Snapdragon 8 Elite (SM8750-AB) (3nm) |
| CPU | Dual-core, 1 processor: 2x 1.2GHz Krait (Dual-core) | Octa-core, 2 processors: 2x 4.32GHz Oryon V2 Phoenix L (Dual-core) 6x 3.53GHz Oryon V2 Phoenix M (Hexa-core) |
| GPU graphical controller | Qualcomm Adreno 230 400Mhz | Qualcomm Adreno 830 (1100MHz) |
| Performance (benchmark) | feature not registered | AnTuTu: 2534643 (v10) Geekbench: 9419 (v6) |
💽 Memory and storage | ||
| Galaxy Axiom (SCH-R830) | Xiaomi 15 (China 512GB/12GB) | |
| RAM memory | 1GB LPDDR2 | 12GB LPDDR5X |
| Internal storage | 4GB (1.83GB available) | 512GB (458GB available) UFS 4.0 |
| External storage | Until 32GB microSD, microSDHC (dedicated slot) | Not supported |
📶 Mobile networks | ||
| Galaxy Axiom (SCH-R830) | Xiaomi 15 (China 512GB/12GB) | |
| Dual-SIM | Not supported | Dual-SIM Standby - Call active on one sim card |
| SIM card | 1 slot (Single-SIM) Standard mini-SIM (2FF) | 2 slots (Dual-SIM) nano-SIM (4FF) + e-SIM |
| Maximum Download / Upload | 100/50 Mbps | 3000/1024 Mbps |
| Network technology | 2G, 3G, 4G | 2G, 3G, 4G, 5G |
| Frequency, bands | Expand band details Collapse details | |
| GSM MHz band | Not supported | Quad-Band 850/900/1800/1900 |
| Primary 2G network | CDMA 800/1700/1900/2100 | GSM 850/900/1800/1900 |
| Primary 3G network | CDMA2000 1xEV-DO | UMTS 850/900/1700/1900/2100 |
| Primary 4G network | LTE Cat3 (Bands 2, 4, 5, 12) | 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 |
| Primary 5G network | Not supported | SA/NSA/Sub6 (1, 2, 3, 5, 12, 20, 26, 28, 38, 40, 41, 48, 66, 77, 78, 80, 81, 83, 84, 89) |
| Primary data network | CDMA2000 EV-DO Rev 0, CDMA2000 EV-DO Rev A, LTE | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A, SA/NSA, Sub6 |
| Secondary 2G network | Not supported | GSM 850/900/1800/1900 |
| Secondary 3G network | Not supported | UMTS 850/900/1700/1900/2100 |
| Secondary 4G network | Not supported | 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 |
| Secondary data network | Not supported | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A, SA/NSA, Sub6 |
📷 Camera | ||
| Galaxy Axiom (SCH-R830) | Xiaomi 15 (China 512GB/12GB) | |
| Back camera (main camera) | 5 megapixels | (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 |
| Main camera resolution | 2592x1944 pixels | 8160x6120 pixels |
| Video recording (primary) | HD (1280x720) | 8K UHD (7680x4320) 30 fps |
| Flash | LED flash | Dual-LED flash |
| Focal aperture | feature not registered | f/1.6 (aperture) |
| Focal length | feature not registered | 23mm (lens) |
| Sensor size | feature not registered | 1/1.31" inches |
| Pixel size | feature not registered | 1.2µm pixel |
| Autofocus | Autofocus | PDAF: phase detection autofocus |
| Touch focus | Supported | Supported |
| Image stabilization | EIS: Digital stabilization | OIS: Optical stabilization |
| Zoom | Only digital zoom | Digital and optical zoom |
| Face/smile detection | Face detection | Face detection, Smile detection |
| BSI sensor | Not supported | Supported |
| HDR | Not supported | HDR photo/video on both cameras |
| Camera extras | feature not registered | 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 |
📸 Front camera | ||
| Galaxy Axiom (SCH-R830) | Xiaomi 15 (China 512GB/12GB) | |
| Front camera (secondary) | 1.3 megapixels | 32 megapixels |
| Front camera resolution | 1280x1024 pixels | 6528x4896 pixels |
| Video recording (secondary) | Not supported | 4K UHD (3840x2160) |
| Front flash | Not supported | Not supported |
| Focal aperture | feature not registered | f/2.0 (aperture) |
| Focal length | feature not registered | 21mm (lens) |
| Sensor size | feature not registered | 1/3.14" inches |
| Pixel size | feature not registered | 0.7µm pixel |
🔉 Sound and multimedia | ||
| Galaxy Axiom (SCH-R830) | Xiaomi 15 (China 512GB/12GB) | |
| Loudspeaker | Supported | Stereo sound 24-bit/192kHz Dolby Atmos Hi-Res |
| Active noise cancellation | Not supported | 4 microphones |
| Radio | Not supported | Not supported |
| TV | Not supported | Not supported |
| Video formats | MP4, DivX, H.264, H.263, WMV | MP4, H.265, H.264, H.263, XviD, MKV |
| Audio formats | MP3, WAV, WMA, eAAC+ | MP3, WAV, WMA, eAAC+, FLAC |
🔌 Connectivity | ||
| Galaxy Axiom (SCH-R830) | Xiaomi 15 (China 512GB/12GB) | |
| USB | MicroUSB 2.0 | USB 3.2 Type-C, USB OTG On-The-Go |
| Audio output | 3.5mm jack | Type-C reversible connector |
| TV output | Not supported | USB Type-C (reversible) |
| Bluetooth | 4.0 + A2DP | 6.0 + A2DP/LE |
| WiFi | 802.11 b/g/n [wifi4] (2.4GHz) | 802.11 a/b/g/n/ac/ax/be [wifi7/6E/6] (2.4GHz, 5GHz, 6GHz) + MIMO WiFi Direct, hotspot |
| DLNA | Supported | Not supported |
| GPS | A-GPS, GeoTagging | A-GPS, GeoTagging, GLONASS, GALILEO, BeiDou, QZSS |
| NFC | Supported | Supported |
| Infrared port | Not supported | Supported |
🧭 Sensors | ||
| Galaxy Axiom (SCH-R830) | Xiaomi 15 (China 512GB/12GB) | |
| Sensors | Accelerometer Ambient light sensor Proximity sensor | Accelerometer Ambient light sensor Barometer Compass Face unlock 2D Fingerprint sensor (under display) Gyroscope Proximity sensor |
| Vibrating alert | Supported | Supported |
🔋 Battery | ||
| Galaxy Axiom (SCH-R830) | Xiaomi 15 (China 512GB/12GB) | |
| Battery type | Li-Ion: lithium-ion (Removable) | Li-Si: lithium-silicon (Non removable) |
| Battery capacity | 2100 mAh | 5400 mAh |
| Charger, watts | Wired charging | 90W Wired fast charging Reverse charging by cable Quick Charge 3+ USB Power Delivery 3.0 |
| Inductive / wireless charging | feature not registered | 50W Qi Wireless charging (Qi/WPC) 10W Reverse wireless charging |
| Talk time autonomy | 8 hours | feature not registered |
| Standby | 252 hours (10.5 days) | feature not registered |
➕ Other features | ||
| Galaxy Axiom (SCH-R830) | Xiaomi 15 (China 512GB/12GB) | |
| 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, Flash player | HTML, XHTML, HTML5 |
| Antenna | Internal antenna | Internal antenna |
| Qwerty physical keyboard | Not supported | Not supported |
| Miscellaneous | • Colors: Blue • Wi-Fi hotspot • Java framework | • Colors: Black, White, Green, Lilac, Liquid Silver • Xiaomi HyperAI |
☢️ Radiation rate | ||
| Galaxy Axiom (SCH-R830) | Xiaomi 15 (China 512GB/12GB) | |
| SAR 1.6W/kg (USA, Mexico, etc.) | 0.69W/kg (head), 1.28W/kg (body) | feature not registered |
| SAR 2W/kg (Europe, UK, etc.) | feature not registered | 0.99W/kg (head), 1W/kg (body) |