Samsung Galaxy J1 Duos (SM-J100M/DS) vs Samsung Galaxy S21 FE (SM-G990B2/DS 128GB)
Side by side comparison between Samsung Galaxy J1 vs Samsung Galaxy S21 FE phones, differences, pros, cons and full specifications. What's the better?
,
4.3"
TFT
TFT
480x800
5
MP
MP
2mp
768MB
RAM
RAM
Quad-core
1850
mAh
mAh
(Removable)
vs
6.4"
AMOLED
AMOLED
1080x2400
12.2
MP
MP
32mp
6GB
RAM
RAM
Octa-core
4500
mAh
mAh
(Non removable)
What's the better phone? Samsung Galaxy S21 FE (SM-G990B2/DS 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!
5 Advantages 
37 Advantages | 11 Common items in both devices |
| 16 million |
| LED flash |
| Autofocus / PDAF: phase detection autofocus |
| Capacitive |
| Multitouch |
| Accelerometer |
| Ambient light sensor |
| +4 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 J1 Duos (SM-J100M/DS) | Galaxy S21 FE (SM-G990B2/DS 128GB) | |
| Model | Galaxy J1 Duos (SM-J100M/DS) | Galaxy S21 FE (SM-G990B2/DS 128GB) |
| Other model names | Galaxy J1 (4G LTE) SM-J100M/Dual-Sim | Galaxy S21 FE 5G SM-G990B2/Dual-SIM (Snapdragon) |
| Country or region available |  Brazil |  (Europe) |
| Brand | Samsung | Samsung |
| Release date | 2/1/2015 | 1/7/2022, Announced: 1/4/2022 |
| Depth | 8.9 millimeters (0.35 inches) | 7.9 millimeters (0.31 inches) |
| Size (width x height) | 68.2 x 129 millimeters (2.69 x 5.08 in) | 74.5 x 155.7 millimeters (2.93 x 6.13 in) |
| Weight | 122 grams (4.27 ounces) | 177 grams (6.2 ounces) |
| Build, materials | Plastic body, glass front | Aluminum body, glass front, plastic back |
| Protection against water and others | Not supported | IP68 certified: water-resistant up to 1.5 meters for 30min and dust-resistant |
📲 Display | ||
| Galaxy J1 Duos (SM-J100M/DS) | Galaxy S21 FE (SM-G990B2/DS 128GB) | |
| Display type | TFT LCD | Dynamic AMOLED |
| Screen size | 4.3" inches | 6.4" inches |
| Screen-to-body ratio | ~59.8% (screen-to-body ratio) | ~85.3% (screen-to-body ratio) |
| Display resolution | 480x800 pixels | 1080x2400 pixels (20:9) |
| Touchscreen | Capacitive Multitouch | Capacitive Multitouch 10-points |
| Pixel density (dot pitch) | 217 PPI | 411 PPI |
| Colors | 16 million | 16 million |
| Scratch-resistant glass | Not supported | Gorilla Glass Victus |
| Refresh rate | 60Hz | 120Hz |
| Display features | Not supported | 1300nits[peak] HDR10+ Always-On Display |
🤖 Operating System | ||
| Galaxy J1 Duos (SM-J100M/DS) | Galaxy S21 FE (SM-G990B2/DS 128GB) | |
| System version | Android 4.4.4 KitKat | Android 12 |
| Firmware update | feature not registered | Android 14 |
| User Interface | feature not registered | One UI 4.1 / 5.1 / 6.0 |
⚙️ Processor | ||
| Galaxy J1 Duos (SM-J100M/DS) | Galaxy S21 FE (SM-G990B2/DS 128GB) | |
| Chipset | 64bit: Marvell Armada PXA1908 (28nm) | 64bit: Qualcomm Snapdragon 888 (SM8350) (5nm) |
| CPU | Quad-core, 1 processor: 4x 1.2GHz ARM Cortex-A53 (Quad-core) | Octa-core, 3 processors: 1x 2.84GHz Kryo 680 (Single-core) 3x 2.42GHz Kryo 680 (Triple-core) 4x 1.8GHz Kryo 680 (Quad-core) |
| GPU graphical controller | Vivante GC7000UL | Qualcomm Adreno 660 (840MHz) |
| Performance (benchmark) | feature not registered | AnTuTu: 566529 (v8), 719696 (v9) Geekbench: 3049 (v5.1) GFXBench: 56fps (ES 3.1 onscreen) |
💽 Memory and storage | ||
| Galaxy J1 Duos (SM-J100M/DS) | Galaxy S21 FE (SM-G990B2/DS 128GB) | |
| RAM memory | 768MB LPDDR3 | 6GB LPDDR5 |
| Internal storage | 4GB (2GB available) eMMC | 128GB (97GB available) UFS 3.1 |
| External storage | Until 128GB microSD, microSDXC (dedicated slot) | Not supported |
📶 Mobile networks | ||
| Galaxy J1 Duos (SM-J100M/DS) | Galaxy S21 FE (SM-G990B2/DS 128GB) | |
| Dual-SIM | Dual-SIM Standby - Call active on one sim card (dedicated slot) | Dual-SIM Standby - Call active on one sim card |
| SIM card | 2 slots (Dual-SIM) micro-SIM (3FF) | 2 slots (Dual-SIM) nano-SIM (4FF) |
| Maximum Download / Upload | 150/50 Mbps | 2000/1024 Mbps |
| Network technology | 2G, 3G, 4G | 2G, 3G, 4G, 5G |
| 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 Cat4 700/850/1700/1900/2100/2600 (Bands 1,2,4,5,7,17) | LTE Cat20 (1, 2, 3, 4, 5, 7, 8, 12, 17, 20, 26, 28, 32, 66) TD-LTE (38, 40, 41) VoLTE |
| Primary 5G network | Not supported | SA/NSA/Sub6 (1, 3, 5, 7, 8, 20, 28, 38, 40, 41, 66, 78) |
| Primary data network | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, LTE | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A, SA/NSA |
| Secondary 2G network | GSM 850/900/1800/1900 | 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, 20, 26, 28, 32, 66) TD-LTE (38, 40, 41) VoLTE |
| Secondary data network | GPRS, EDGE | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A, SA/NSA |
📷 Camera | ||
| Galaxy J1 Duos (SM-J100M/DS) | Galaxy S21 FE (SM-G990B2/DS 128GB) | |
| Back camera (main camera) | 5 megapixels | (triple camera) 12.2 megapixels 12MP ultrawide f/2.2123°13mm1/3"1.12µm 8MP telephoto f/2.476mm1/4.5"1.0µmPDAFOIS3x-optical-zoom |
| Main camera resolution | 2592x1944 pixels | 4032x3024 pixels |
| Video recording (primary) | HD (1280x720) 30 fps | 4K UHD (3840x2160) 60 fps |
| Flash | LED flash | LED flash |
| Focal aperture | feature not registered | f/1.8 (aperture) |
| Focal length | feature not registered | 26mm lens |
| Sensor size | feature not registered | 1/1.76" inches |
| Pixel size | feature not registered | 1.8µm 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 | HDR photo only main camera | HDR photo/video on both cameras |
| Camera extras | feature not registered | 4K@30/60fps 1080p@30/60fps 1080p@240fps (slow motion) 720p@960fps (slow motion) |
📸 Front camera | ||
| Galaxy J1 Duos (SM-J100M/DS) | Galaxy S21 FE (SM-G990B2/DS 128GB) | |
| Front camera (secondary) | 2 megapixels | 32 megapixels |
| Front camera resolution | 1600x1200 pixels | 6528x4896 pixels |
| Video recording (secondary) | VGA (640x480) | 4K UHD (3840x2160) |
| Front flash | Not supported | Not supported |
| Focal aperture | feature not registered | f/2.2 (aperture) |
| Focal length | feature not registered | 26mm lens |
| Sensor size | feature not registered | 1/2.74" inches |
| Pixel size | feature not registered | 0.8µm pixel |
🔉 Sound and multimedia | ||
| Galaxy J1 Duos (SM-J100M/DS) | Galaxy S21 FE (SM-G990B2/DS 128GB) | |
| Loudspeaker | Supported | Stereo sound 32-bit/384kHz Dolby Atmos Tuned by AKG |
| Active noise cancellation | Not supported | 2 microphones or more |
| Radio | FM (RDS) | Not supported |
| TV | Not supported | Not supported |
| Video formats | MP4, H.264, H.263 | MP4, H.265, H.264, H.263, XviD, MKV |
| Audio formats | MP3, WAV, eAAC+, FLAC | MP3, WAV, WMA, eAAC+, FLAC |
🔌 Connectivity | ||
| Galaxy J1 Duos (SM-J100M/DS) | Galaxy S21 FE (SM-G990B2/DS 128GB) | |
| 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 SlimPort® |
| Bluetooth | 4.0 + A2DP | 5.0 + A2DP/LE |
| WiFi | 802.11 b/g/n [wifi4] (2.4GHz) WiFi Direct, hotspot | 802.11 a/b/g/n/ac/ax [wifi6] (2.4GHz, 5GHz) + MIMO WiFi Direct, hotspot |
| DLNA | Not supported | Supported |
| GPS | A-GPS, GeoTagging, GLONASS | A-GPS, GeoTagging, GLONASS, GALILEO, BeiDou |
| NFC | Not supported | Supported |
| Infrared port | Not supported | Not supported |
🧭 Sensors | ||
| Galaxy J1 Duos (SM-J100M/DS) | Galaxy S21 FE (SM-G990B2/DS 128GB) | |
| Sensors | Accelerometer Ambient light sensor Proximity sensor | Accelerometer Ambient light sensor Barometer Compass Face unlock Fingerprint sensor (under display) Gyroscope Hall effect Proximity sensor |
| Vibrating alert | Supported | Supported |
🔋 Battery | ||
| Galaxy J1 Duos (SM-J100M/DS) | Galaxy S21 FE (SM-G990B2/DS 128GB) | |
| Battery type | Li-Ion: lithium-ion (Removable) | LiPo: li-ion polymer (Non removable) |
| Battery capacity | 1850 mAh | 4500 mAh |
| Charger, watts | Wired charging | 25W Wired fast charging Reverse charging by cable USB Power Delivery 3.0 |
| Inductive / wireless charging | Not supported | 15W Qi wireless charging 4.5W Reverse wireless charging |
| Talk time autonomy | 10 hours | feature not registered |
| Standby | feature not registered | feature not registered |
➕ Other features | ||
| Galaxy J1 Duos (SM-J100M/DS) | Galaxy S21 FE (SM-G990B2/DS 128GB) | |
| Call control | Voice recorder | 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: White, Black, Blue • Samsung TouchWiz UI | • Colors: Graphite, White, Lavender, Olive |
☢️ Radiation rate | ||
| Galaxy J1 Duos (SM-J100M/DS) | Galaxy S21 FE (SM-G990B2/DS 128GB) | |
| SAR 1.6W/kg (USA, Mexico, etc.) | 1.23W/kg (head), 1.28W/kg (body) | feature not registered |
| SAR 2W/kg (Europe, UK, etc.) | 0.539W/kg (head), 0.334W/kg (body) | 0.952W/kg (head), 1.48W/kg (body) |