Physical features | Nokia Lumia 830 (RM-983) | Samsung Galaxy A21 (SM-A215U) |
Model | Lumia 830 (RM-983) | Galaxy A21 (SM-A215U) |
Other model names | AT&T Nokia Lumia 830 4G RM-983, Nokia Tesla | Galaxy A21 SM-A215U (Sprint, T-Mobile, US Cellular, Verizon) |
Country or region available |  USA |  USA |
Brand | Nokia | Samsung |
Release date | September, 2014 | June, 2020 |
Depth | 8.5 millimeters (0.33 inches) | 8.1 millimeters (0.32 inches) |
Size (width x height) | 70.7 x 139.4 millimeters (2.78 x 5.49 in) | 76.7 x 167.8 millimeters (3.02 x 6.61 in) |
Weight | 150 grams (5.25 ounces) | 193 grams (6.76 ounces) |
Qwerty physical keyboard | Not supported | Not supported |
Antenna | Internal antenna | Internal antenna |
Build, materials | feature not registered | Plastic body, glass front |
Protection against water and others | Not supported | Not supported |
System (OS) | Nokia Lumia 830 (RM-983) | Samsung Galaxy A21 (SM-A215U) |
Operating system | Windows Phone 8.1 | Android 10 |
Firmware update | Windows 10 Mobile | feature not registered |
Hardware | Nokia Lumia 830 (RM-983) | Samsung Galaxy A21 (SM-A215U) |
Chipset | 32bit - Qualcomm Snapdragon 400 MSM8926 (28nm) | 64bit - MediaTek MT6765 Helio P35 (12nm) |
CPU processor | 1.2Ghz Quad-Core ARM Cortex-A7 | Octa-Core, 2 processors: 2.3Ghz Quad-Core ARM Cortex-A53 1.8Ghz Quad-Core ARM Cortex-A53 |
GPU graphical controller | Qualcomm Adreno 305 400Mhz | PowerVR GE8320 680Mhz |
RAM memory | 1GB LPDDR2 | 3GB LPDDR3 |
Internal storage | 16GB (14GB available) | 32GB (20GB available) eMMC 5.1 |
External storage | Until 256GB microSD, microSDXC (dedicated slot) | Until 512GB microSD, microSDXC (dedicated slot) |
Display | Nokia Lumia 830 (RM-983) | Samsung Galaxy A21 (SM-A215U) |
Display type | TFT IPS LCD | TFT PLS |
Screen size | 5" inches | 6.5" inches |
Screen-to-body ratio | ~69.9% (screen-to-body ratio) | ~79.3% (screen-to-body ratio) |
Display resolution | 720x1280 pixels | 720x1600 pixels (20:9) |
Touchscreen | Capacitive Multitouch | Capacitive Multitouch |
Pixel density (dot pitch) | 294 PPI | 270 PPI |
Colors | 16 million | 16 million |
Scratch-resistant glass | Gorilla Glass 3 | Not supported |
Display features | feature not registered | 60Hz |
Mobile networks | Nokia Lumia 830 (RM-983) | Samsung Galaxy A21 (SM-A215U) |
Dual-SIM | Not supported | Not supported |
SIM card | 1 slot (Single-SIM) nano-SIM (4FF) | 1 slot (Single-SIM) nano-SIM (4FF) |
Maximum download/upload | 150/50 Mbps | 150/50 Mbps |
Network technology | 2G, 3G, 4G | 2G, 3G, 4G |
Frequency, bands | Expand band detailsCollapse details |
GSM Mhz band | Quad-Band 850/900/1800/1900 | Quad-Band 850/900/1800/1900 |
Primary 2G network | GSM 850/900/1800/1900 | CDMA 800/1900, GSM 850/900/1800/1900 |
Primary 3G network | UMTS 850/900/1900/2100 | CDMA2000 1xEV-DO UMTS 850/900/1700/1900/2100 |
Primary 4G network | LTE Cat4 700/850/1700/1900 (Bands 2,4,5,17) | LTE Cat4 (1, 2, 3, 5, 7, 8, 20, 28) TD-LTE (38, 40, 41) VoLTE |
Primary 5G network | Not supported | Not supported |
Primary data network | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, LTE | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE |
Secondary 2G network | Not supported | Not supported |
Secondary 3G network | Not supported | Not supported |
Secondary 4G network | Not supported | Not supported |
Secondary data network | Not supported | Not supported |
Calling | Nokia Lumia 830 (RM-983) | Samsung Galaxy A21 (SM-A215U) |
Messaging | SMS (T9), MMS, E-mail, Push mail | SMS (T9), MMS, E-mail, Push mail |
Speakerphone | Supported | Supported |
Video calling | Supported | Supported |
Call control | Voice dialing, Voice recorder, Voice commands | Voice dialing, Voice recorder, Voice commands |
Camera | Nokia Lumia 830 (RM-983) | Samsung Galaxy A21 (SM-A215U) |
Back camera (main camera) | 10.1 megapixels | (quad camera) 16 megapixels 8MP ultrawidef/2.21/4.0"1.12µm 2MP macrof/2.4 2MP depthf/2.4 |
Main camera resolution | 3840x2640 pixels | 4608x3456 pixels |
Video recording (primary) | Full HD (1920x1080) 30 fps | Full HD (1920x1080) 30 fps |
Flash | LED flash | LED flash |
Focal aperture | f/2.2 (aperture) | f/1.8 (aperture) |
Focal length | feature not registered | feature not registered |
Sensor size | 1/3.4" inches | 1/3.06" inches |
Pixel size | feature not registered | 1µm pixel |
Autofocus | Autofocus | PDAF: phase detection autofocus |
Touch focus | Supported | Supported |
Image stabilization | feature not registered | EIS: Digital stabilization |
Zoom | Only digital zoom | Only digital zoom |
Face/smile detection | Face detection, Smile detection | Face detection, Smile detection |
BSI sensor | Supported | Not supported |
HDR | HDR photo only main camera | HDR photo on both cameras |
2ª camera | Nokia Lumia 830 (RM-983) | Samsung Galaxy A21 (SM-A215U) |
Front camera (secondary) | 1 megapixels | 13 megapixels |
Front camera resolution | 1280x720 pixels | 4128x3096 pixels |
Video recording (secondary) | HD (1280x720) | Full HD (1920x1080) |
Front flash | Not supported | Not supported |
Focal aperture | feature not registered | f/2.0 (aperture) |
Focal length | feature not registered | feature not registered |
Sensor size | feature not registered | feature not registered |
Pixel size | feature not registered | 1.12µm pixel |
Multimedia | Nokia Lumia 830 (RM-983) | Samsung Galaxy A21 (SM-A215U) |
Radio | FM | FM |
TV | Not supported | Not supported |
Video formats | MP4, 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 | Nokia Lumia 830 (RM-983) | Samsung Galaxy A21 (SM-A215U) |
USB | MicroUSB 2.0 | USB 2.0 Type-C reversible connector |
TV output | Not supported | Not supported |
Audio output | 3.5mm jack | 3.5mm jack |
Bluetooth | 4.0 + A2DP | 5.0 + A2DP/LE |
WiFi | 802.11 b/g/n (2.4Ghz) | 802.11 a/b/g/n/ac (2.4Ghz, 5Ghz) + MIMO |
DLNA | Supported | Not supported |
NFC | Supported | Not supported |
GPS | A-GPS, GeoTagging, GLONASS, BeiDou | A-GPS, GeoTagging, GLONASS |
Infrared port | Not supported | Not supported |
Other functions | Nokia Lumia 830 (RM-983) | Samsung Galaxy A21 (SM-A215U) |
Active noise cancellation | Supported | Supported |
Vibrating alert | Supported | Supported |
Ringtones | Polyphonic and customized | Polyphonic and customized |
Web browser | HTML, XHTML, HTML5 | HTML, XHTML, HTML5 |
Sensors | Accelerometer Proximity sensor Compass Ambient Light sensor Gyroscope
| Accelerometer Proximity sensor Compass Ambient Light sensor Gyroscope Face unlock Fingerprint sensor (rear-mounted)
|
Other features | - Colors: Black, Orange, Green, White - Lumia Denim UI - Nokia ClearBlack Display - Dolby Digital Plus sound enhancement - Carl Zeiss optics - 15GB OneDrive - Qi wireless charging - WiFi hotspot | - Colors: Black - One UI 2.0 - WiFi direct, hotspot |
Power supply | Nokia Lumia 830 (RM-983) | Samsung Galaxy A21 (SM-A215U) |
Battery | Li-Ion: Lithium-Ion (Removable) BV-L4A | LiPo: Li-Ion polymer (Non removable) |
Battery capacity | 2200 mAh | 4000 mAh |
Charger, watts | Standard charging | 15W Fast battery charging |
Talk time autonomy | 900 minutes | 15 hours | 0.6 day | feature not registered |
Standby | 31800 minutes | 530 hours | 22.1 days | feature not registered |
Radiation rate | Nokia Lumia 830 (RM-983) | Samsung Galaxy A21 (SM-A215U) |
SAR 1.6W/kg (USA, Mexico, etc.) | 0.87W/kg (head) | 0.83W/kg (body) | 0.6W/kg (head) | 1.27W/kg (body) |
SAR 2W/kg (Europe, UK, etc.) | 0.46W/kg (head) | 0.59W/kg (body) | feature not registered |