Samsung Galaxy A21 (SM-A215U1) vs Samsung Galaxy J1 Duos (SM-J100M/DS)
Side by side comparison between Samsung Galaxy A21 vs Samsung Galaxy J1 phones, differences, pros, cons and full specifications. What's the better?
,
6.5"
PLS
PLS
720x1600
16
MP
MP
13mp
3GB
RAM
RAM
Octa-core
4000
mAh
mAh
(Non removable)
vs
4.3"
TFT
TFT
480x800
5
MP
MP
2mp
768MB
RAM
RAM
Quad-core
1850
mAh
mAh
(Removable)
What's the better phone? Samsung Galaxy A21 (SM-A215U1)
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!
26 Advantages 
3 Advantages | 22 Common items in both devices |
| Plastic body, glass front |
| 60Hz |
| 16 million |
| LED flash |
| Only digital zoom |
| PDAF: phase detection autofocus / Autofocus |
| EIS: Digital stabilization |
| +15 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 A21 (SM-A215U1) | Galaxy J1 Duos (SM-J100M/DS) | |
| Model | Galaxy A21 (SM-A215U1) | Galaxy J1 Duos (SM-J100M/DS) |
| Other model names | Galaxy A21 SM-A215UZKAXAA (USA Unlocked) | Galaxy J1 (4G LTE) SM-J100M/Dual-Sim |
| Country or region available |  USA |  Brazil |
| Brand | Samsung | Samsung |
| Release date | 6/26/2020 | 2/1/2015 |
| Depth | 8.1 millimeters (0.32 inches) | 8.9 millimeters (0.35 inches) |
| Size (width x height) | 76.7 x 167.8 millimeters (3.02 x 6.61 in) | 68.2 x 129 millimeters (2.69 x 5.08 in) |
| Weight | 193 grams (6.76 ounces) | 122 grams (4.27 ounces) |
| Build, materials | Plastic body, glass front | Plastic body, glass front |
| Protection against water and others | Not supported | Not supported |
📲 Display | ||
| Galaxy A21 (SM-A215U1) | Galaxy J1 Duos (SM-J100M/DS) | |
| Display type | TFT PLS | TFT LCD |
| Screen size | 6.5" inches | 4.3" inches |
| Screen-to-body ratio | ~79.3% (screen-to-body ratio) | ~59.8% (screen-to-body ratio) |
| Display resolution | 720x1600 pixels (20:9) | 480x800 pixels |
| Touchscreen | Capacitive Multitouch | Capacitive Multitouch |
| Pixel density (dot pitch) | 270 PPI | 217 PPI |
| Colors | 16 million | 16 million |
| Scratch-resistant glass | Not supported | Not supported |
| Refresh rate | 60Hz | 60Hz |
| Display features | Not supported | Not supported |
🤖 Operating System | ||
| Galaxy A21 (SM-A215U1) | Galaxy J1 Duos (SM-J100M/DS) | |
| System version | Android 10 | Android 4.4.4 KitKat |
| Firmware update | feature not registered | feature not registered |
| User Interface | feature not registered | feature not registered |
⚙️ Processor | ||
| Galaxy A21 (SM-A215U1) | Galaxy J1 Duos (SM-J100M/DS) | |
| Chipset | 64bit: MediaTek Helio P35 (MT6765) (12nm) | 64bit: Marvell Armada PXA1908 (28nm) |
| CPU | Octa-core, 2 processors: 4x 2.3GHz ARM Cortex-A53 (Quad-core) 4x 1.8GHz ARM Cortex-A53 (Quad-core) | Quad-core, 1 processor: 4x 1.2GHz ARM Cortex-A53 (Quad-core) |
| GPU graphical controller | PowerVR GE8320 MP2 (680MHz) | Vivante GC7000UL |
| Performance (benchmark) | feature not registered | feature not registered |
💽 Memory and storage | ||
| Galaxy A21 (SM-A215U1) | Galaxy J1 Duos (SM-J100M/DS) | |
| RAM memory | 3GB LPDDR3 | 768MB LPDDR3 |
| Internal storage | 32GB (20GB available) eMMC 5.1 | 4GB (2GB available) eMMC |
| External storage | Until 512GB microSD, microSDXC (dedicated slot) | Until 128GB microSD, microSDXC (dedicated slot) |
📶 Mobile networks | ||
| Galaxy A21 (SM-A215U1) | Galaxy J1 Duos (SM-J100M/DS) | |
| Dual-SIM | Not supported | Dual-SIM Standby - Call active on one sim card (dedicated slot) |
| SIM card | 1 slot (Single-SIM) nano-SIM (4FF) | 2 slots (Dual-SIM) micro-SIM (3FF) |
| Maximum Download / Upload | 150/50 Mbps | 150/50 Mbps |
| Network technology | 2G, 3G, 4G | 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 800/1900, GSM 850/900/1800/1900 | GSM 850/900/1800/1900 |
| Primary 3G network | CDMA2000 1xEV-DO UMTS 850/900/1700/1900/2100 | UMTS 850/900/1700/1900/2100 |
| Primary 4G network | LTE Cat4 (1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 20, 25, 26, 28, 66, 71) TD-LTE (38, 39, 40, 41) VoLTE | LTE Cat4 700/850/1700/1900/2100/2600 (Bands 1,2,4,5,7,17) |
| Primary 5G network | Not supported | Not supported |
| Primary data network | GPRS, EDGE, CDMA2000 EV-DO Rev 0, CDMA2000 EV-DO Rev A, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, LTE |
| Secondary 2G network | Not supported | GSM 850/900/1800/1900 |
| Secondary 3G network | Not supported | Not supported |
| Secondary 4G network | Not supported | Not supported |
| Secondary data network | Not supported | GPRS, EDGE |
📷 Camera | ||
| Galaxy A21 (SM-A215U1) | Galaxy J1 Duos (SM-J100M/DS) | |
| Back camera (main camera) | (quad camera) 16 megapixels 8MP ultrawide f/2.21/4.0"1.12µm 2MP macro f/2.4 2MP depth f/2.4 | 5 megapixels |
| Main camera resolution | 4608x3456 pixels | 2592x1944 pixels |
| Video recording (primary) | Full HD (1920x1080) 30 fps | HD (1280x720) 30 fps |
| Flash | LED flash | LED flash |
| Focal aperture | f/1.8 (aperture) | feature not registered |
| Focal length | feature not registered | feature not registered |
| Sensor size | 1/3.06" inches | feature not registered |
| Pixel size | 1µm pixel | feature not registered |
| Autofocus | PDAF: phase detection autofocus | Autofocus |
| Touch focus | Supported | Supported |
| Image stabilization | EIS: Digital stabilization | EIS: Digital stabilization |
| Zoom | Only digital zoom | Only digital zoom |
| Face/smile detection | Face detection, Smile detection | Face detection |
| BSI sensor | Not supported | Not supported |
| HDR | HDR photo on both cameras | HDR photo only main camera |
| Camera extras | feature not registered | feature not registered |
📸 Front camera | ||
| Galaxy A21 (SM-A215U1) | Galaxy J1 Duos (SM-J100M/DS) | |
| Front camera (secondary) | 13 megapixels | 2 megapixels |
| Front camera resolution | 4128x3096 pixels | 1600x1200 pixels |
| Video recording (secondary) | Full HD (1920x1080) | VGA (640x480) |
| Front flash | Not supported | Not supported |
| Focal aperture | f/2.0 (aperture) | feature not registered |
| Focal length | feature not registered | feature not registered |
| Sensor size | feature not registered | feature not registered |
| Pixel size | 1.12µm pixel | feature not registered |
🔉 Sound and multimedia | ||
| Galaxy A21 (SM-A215U1) | Galaxy J1 Duos (SM-J100M/DS) | |
| Loudspeaker | Supported | Supported |
| Active noise cancellation | 2 microphones or more | Not supported |
| Radio | FM | FM (RDS) |
| TV | Not supported | Not supported |
| Video formats | MP4, H.265, H.264, H.263, XviD, MKV | MP4, H.264, H.263 |
| Audio formats | MP3, WAV, WMA, eAAC+, FLAC | MP3, WAV, eAAC+, FLAC |
🔌 Connectivity | ||
| Galaxy A21 (SM-A215U1) | Galaxy J1 Duos (SM-J100M/DS) | |
| USB | USB 2.0 Type-C reversible connector | MicroUSB 2.0 |
| Audio output | 3.5mm jack | 3.5mm jack |
| TV output | Not supported | Not supported |
| Bluetooth | 5.0 + A2DP/LE | 4.0 + A2DP |
| WiFi | 802.11 a/b/g/n/ac [wifi5] (2.4GHz, 5GHz) + MIMO WiFi Direct, hotspot | 802.11 b/g/n [wifi4] (2.4GHz) WiFi Direct, hotspot |
| DLNA | Not supported | Not supported |
| GPS | A-GPS, GeoTagging, GLONASS | A-GPS, GeoTagging, GLONASS |
| NFC | Supported | Not supported |
| Infrared port | Not supported | Not supported |
🧭 Sensors | ||
| Galaxy A21 (SM-A215U1) | Galaxy J1 Duos (SM-J100M/DS) | |
| Sensors | Accelerometer Ambient light sensor Compass Face unlock 2D Fingerprint sensor (rear-mounted) Gyroscope Proximity sensor | Accelerometer Ambient light sensor Proximity sensor |
| Vibrating alert | Supported | Supported |
🔋 Battery | ||
| Galaxy A21 (SM-A215U1) | Galaxy J1 Duos (SM-J100M/DS) | |
| Battery type | LiPo: li-ion polymer (Non removable) | Li-Ion: lithium-ion (Removable) |
| Battery capacity | 4000 mAh | 1850 mAh |
| Charger, watts | 15W Wired fast charging | Wired charging |
| Inductive / wireless charging | Not supported | Not supported |
| Talk time autonomy | feature not registered | 10 hours |
| Standby | feature not registered | feature not registered |
➕ Other features | ||
| Galaxy A21 (SM-A215U1) | Galaxy J1 Duos (SM-J100M/DS) | |
| Call control | Voice dialing, Voice recorder, Voice commands | Voice recorder |
| 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 • One UI 2.0 | • Colors: White, Black, Blue • Samsung TouchWiz UI |
☢️ Radiation rate | ||
| Galaxy A21 (SM-A215U1) | Galaxy J1 Duos (SM-J100M/DS) | |
| SAR 1.6W/kg (USA, Mexico, etc.) | 0.6W/kg (head), 1.27W/kg (body) | 1.23W/kg (head), 1.28W/kg (body) |
| SAR 2W/kg (Europe, UK, etc.) | feature not registered | 0.539W/kg (head), 0.334W/kg (body) |