Microsoft Lumia 640 (Dual-Sim LTE) vs Samsung Galaxy S21 Ultra (SM-G998B 256GB)
Side by side comparison between Microsoft Lumia 640 vs Samsung Galaxy S21 Ultra phones, differences, pros, cons and full specifications. What's the better?
,
vs
6.8"
AMOLED
AMOLED
1440x3200
108
MP
MP
40mp
12GB
RAM
RAM
Octa-core
5000
mAh
mAh
(Non removable)
What's the better phone? Samsung Galaxy S21 Ultra (SM-G998B 256GB)
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!
15 Common items in both devices |
16 million |
LED flash |
Autofocus / PDAF: phase detection autofocus on both cameras |
Capacitive |
Multitouch |
Accelerometer |
Ambient light sensor |
+8 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 | ||
Microsoft Lumia 640 (Dual-Sim LTE) | Galaxy S21 Ultra (SM-G998B 256GB) | |
Model | Lumia 640 (Dual-Sim LTE) | Galaxy S21 Ultra (SM-G998B 256GB) |
Other model names | Microsoft Lumia 640 LTE Dual Chip RM-1077, Lumia 640 RM-1077 | Galaxy S21 Ultra 5G (SM-G998B Single-SIM) |
Country or region available | feature not registered | Australia |
Brand | Microsoft | Samsung |
Release date | 4/1/2015 | 1/29/2021, Announced: 1/14/2021 |
Depth | 8.8 millimeters (0.35 inches) | 8.9 millimeters (0.35 inches) |
Size (width x height) | 72.2 x 141.3 millimeters (2.84 x 5.56 in) | 75.6 x 165.1 millimeters (2.98 x 6.5 in) |
Weight | 145 grams (5.08 ounces) | 227 grams (7.95 ounces) |
Build, materials | feature not registered | Aluminum frame, glass front/back |
Protection against water and others | Not supported | IP68 certified: water-resistant up to 1.5 meters for 30min and dust-resistant |
📲 Display | ||
Microsoft Lumia 640 (Dual-Sim LTE) | Galaxy S21 Ultra (SM-G998B 256GB) | |
Display type | TFT IPS LCD | Dynamic AMOLED |
Screen size | 5" inches | 6.8" inches |
Screen-to-body ratio | ~67.6% (screen-to-body ratio) | ~89.4% (screen-to-body ratio) |
Display resolution | 720x1280 pixels | 1440x3200 pixels (20:9) |
Touchscreen | Capacitive Multitouch | Capacitive Multitouch 10-points |
Pixel density (dot pitch) | 294 PPI | 516 PPI |
Colors | 16 million | 16 million |
Scratch-resistant glass | Gorilla Glass 3 | Gorilla Glass Victus |
Refresh rate | feature not registered | 120Hz |
Display features | feature not registered | 1500nits[peak] HDR10+ Always-On Display |
🤖 Operating System | ||
Microsoft Lumia 640 (Dual-Sim LTE) | Galaxy S21 Ultra (SM-G998B 256GB) | |
System version | Windows Phone 8.1 | Android 11 |
Firmware update | feature not registered | Android 14 |
User Interface | feature not registered | One UI 3.1 / 4.1 / 5.1 / 6.0 |
⚙️ Processor | ||
Microsoft Lumia 640 (Dual-Sim LTE) | Galaxy S21 Ultra (SM-G998B 256GB) | |
Chipset | 32bit: Qualcomm Snapdragon 400 MSM8926 (28nm) | 64bit: Samsung Exynos 2100 (5nm) |
CPU | Quad-core, 1 processor: 4x 1.2GHz ARM Cortex-A7 (Quad-core) | Octa-core, 3 processors: 1x 2.9GHz ARM Cortex-X1 (Single-core) 3x 2.8GHz ARM Cortex-A78 (Triple-core) 4x 2.2GHz ARM Cortex-A55 (Quad-core) |
GPU graphical controller | Qualcomm Adreno 305 400Mhz | ARM Mali-G78 MP14 (854MHz) |
Performance (benchmark) | feature not registered | AnTuTu: 657150 (v8), 727634 (v9) Geekbench: 3457 (v5.2) GFXBench: 51fps (ES 3.1 onscreen) |
💽 Memory and storage | ||
Microsoft Lumia 640 (Dual-Sim LTE) | Galaxy S21 Ultra (SM-G998B 256GB) | |
RAM memory | 1GB LPDDR2 | 12GB LPDDR5 |
Internal storage | 8GB (3GB available) | 256GB (220GB available) UFS 3.1 |
External storage | Until 128GB microSD, microSDXC (dedicated slot) | Not supported |
📶 Mobile networks | ||
Microsoft Lumia 640 (Dual-Sim LTE) | Galaxy S21 Ultra (SM-G998B 256GB) | |
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) | 1 slot (Single-SIM) nano-SIM (4FF) + e-SIM |
Maximum Download / Upload | 150/50 Mbps | 5000/1920 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 850/900/1900/2100 | UMTS 850/900/1700/1900/2100 |
Primary 4G network | LTE Cat4 700/850/900/1700/1800/1900/2100/2300/2600 (Bands 1/2/3/4/5/7/8/12/17/20/28/32/38/40) | LTE Cat20 (1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 32, 66) TD-LTE (38, 39, 40, 41) VoLTE |
Primary 5G network | Not supported | SA/NSA/Sub6 (1, 3, 5, 7, 8, 20, 28, 38, 40, 41, 66, 77, 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, 13, 17, 18, 19, 20, 25, 26, 28, 32, 66) TD-LTE (38, 39, 40, 41) VoLTE |
Secondary data network | GPRS, EDGE | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A, SA/NSA |
📷 Camera | ||
Microsoft Lumia 640 (Dual-Sim LTE) | Galaxy S21 Ultra (SM-G998B 256GB) | |
Back camera (main camera) | 8 megapixels | (quad camera) 108 megapixels 10MP periscope telephoto f/4.9240mm1/3.24"1.22µmPDAFOIS10x-optical-zoom 10MP telephoto f/2.470mm1/3.24"1.22µmPDAFOIS3x-optical-zoom 12MP ultrawide f/2.213mm1/2.55"1.4µmPDAFSuper-Steady-video |
Main camera resolution | 3264x2448 pixels | 12000x9000 pixels |
Video recording (primary) | Full HD (1920x1080) 30 fps | 8K UHD (7680x4320) 24 fps |
Flash | LED flash | LED flash |
Focal aperture | f/2.2 (aperture) | f/1.8 (aperture) |
Focal length | feature not registered | 26mm lens |
Sensor size | 1/4" inches | 1/1.33" inches |
Pixel size | feature not registered | 1.8µm pixel |
Autofocus | Autofocus | PDAF: phase detection autofocus on both cameras |
Touch focus | Supported | Supported |
Image stabilization | feature not registered | OIS: Optical stabilization |
Zoom | Only digital zoom | Digital and optical zoom |
Face/smile detection | Face detection | Face detection, Smile detection |
BSI sensor | Supported | Supported |
HDR | HDR photo only main camera | HDR photo/video on both cameras |
Camera extras | feature not registered | 4K@60fps 1080p@240fps 720p@960fps |
📸 Front camera | ||
Microsoft Lumia 640 (Dual-Sim LTE) | Galaxy S21 Ultra (SM-G998B 256GB) | |
Front camera (secondary) | 1 megapixels | 40 megapixels |
Front camera resolution | 1280x720 pixels | 7296x5472 pixels |
Video recording (secondary) | HD (1280x720) | 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 | 1/2.8" inches |
Pixel size | feature not registered | 0.7µm pixel |
🔉 Sound and multimedia | ||
Microsoft Lumia 640 (Dual-Sim LTE) | Galaxy S21 Ultra (SM-G998B 256GB) | |
Loudspeaker | Supported | Stereo sound 32-bit/384kHz Dolby Atmos Tuned by AKG |
Active noise cancellation | 2 microphones or more | 2 microphones or more |
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 | ||
Microsoft Lumia 640 (Dual-Sim LTE) | Galaxy S21 Ultra (SM-G998B 256GB) | |
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 | 5.2 + A2DP/LE |
WiFi | 802.11 b/g/n [wifi4] (2.4GHz) | 802.11 a/b/g/n/ac/ax [wifi6] (2.4GHz, 5GHz) + MIMO WiFi Direct, hotspot |
DLNA | Supported | Supported |
GPS | A-GPS, GeoTagging, GLONASS | A-GPS, GeoTagging, GLONASS, GALILEO, BeiDou |
NFC | Supported | Supported |
Infrared port | Not supported | Not supported |
🧭 Sensors | ||
Microsoft Lumia 640 (Dual-Sim LTE) | Galaxy S21 Ultra (SM-G998B 256GB) | |
Sensors | Accelerometer Ambient light sensor Compass Proximity sensor | Accelerometer Ambient light sensor Barometer Compass Face unlock Fingerprint sensor (under display) Gesture Gyroscope Hall effect Proximity sensor UWB (Ultra Wideband) |
Vibrating alert | Supported | Supported |
🔋 Battery | ||
Microsoft Lumia 640 (Dual-Sim LTE) | Galaxy S21 Ultra (SM-G998B 256GB) | |
Battery type | Li-Ion: lithium-ion (Removable) | LiPo: li-ion polymer (Non removable) |
Battery capacity | 2500 mAh | 5000 mAh |
Charger, watts | Wired charging | 25W Wired fast charging USB Power Delivery 3.0 |
Inductive / wireless charging | feature not registered | 15W Qi wireless charging (Qi/PMA) 4.5W Reverse wireless charging |
Talk time autonomy | 20 hours | feature not registered |
Standby | 840 hours (35 days) | feature not registered |
➕ Other features | ||
Microsoft Lumia 640 (Dual-Sim LTE) | Galaxy S21 Ultra (SM-G998B 256GB) | |
Call control | Voice dialing, 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: Black • Lumia Denim UI • Microsoft ClearBlack display • OneDrive 30GB • Beidou GPS • WiFi hotspot | • Colors: Phantom Black, Silver, Titanium, Navy, Brown • Samsung Pay (Visa, MasterCard) • Samsung DeX • Stylus pen support |
☢️ Radiation rate | ||
Microsoft Lumia 640 (Dual-Sim LTE) | Galaxy S21 Ultra (SM-G998B 256GB) | |
SAR 1.6W/kg (USA, Mexico, etc.) | feature not registered | 0.24W/kg (head), 0.72W/kg (body) |
SAR 2W/kg (Europe, UK, etc.) | feature not registered | 0.714W/kg (head), 1.58W/kg (body) |