- Samsung Galaxy S21
- Xiaomi Redmi K80 Ultra
| Product Image |
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| Product Name | Samsung Galaxy S21 | Xiaomi Redmi K80 Ultra |
| Price |
৳. 52,000
|
৳. 49,500
|
| Rating |
4.1
|
4.2
|
| Brand | Samsung | Xiaomi |
| Category | Smart Phone | Smart Phone |
General
| Brand |
Samsung
Xiaomi
|
| Model |
Galaxy S21
Redmi K80 Ultra
|
| Device Type |
Smartphone
Smartphone
|
| Price in BD |
BDT. 52,000 (Unofficial)
BDT. 49,500 (Unofficial)
|
| Release Date |
29 January 2021
26 June 2025
|
| Status |
Available
Available
|
| Camera |
Rear: 12+64+12MP / Front: 10MP
Rear: 50+8MP / Front: 20MP
|
| Display |
6.2 inches (15.75 cm)
6.83 inches (17.35 cm)
|
| Processor |
Exynos 2100
Mediatek Dimensity 9400 Plus
|
| Battery |
4000 mAh
7410 mAh
|
Display
| Display Type |
Dynamic AMOLED 2x
OLED
|
| Screen Size |
6.2 inches (15.75 cm)
6.83 inches (17.35 cm)
|
| Resolution |
1080x2400 px (Full HD Plus)
1280x2772 px (FHD+)
|
| Aspect Ratio |
20:9
19.5:9
|
| Pixel Density |
421 ppi
447 ppi
|
| Screen to Body Ratio |
87.2 %
90.2%
|
| Screen Protection |
Corning Gorilla Glass Victus
Scratch/drop-resistant glass
|
| Bezel-less Display |
Yes with punch-hole display
Yes with punch-hole display
|
| Touch Screen |
Capacitive Touchscreen, Multi-touch
Capacitive Touchscreen, Multi-touch
|
| Brightness |
1300 nits
3200 nits
|
| HDR 10 / HDR + support |
HDR 10+
HDR 10+
|
| Refresh Rate |
120 Hz
144 Hz
|
| Notch |
Punch-hole
Punch-hole
|
| Features |
Always-on display
N/A
|
Hardware & Software
Software
| Operating System |
Android
Android
|
| OS Version |
v11
v15
|
| User Interface |
One UI 6.1
HyperOS 2
|
Processor
| Chipset |
Samsung Exynos 2100
Mediatek Dimensity 9400 Plus
|
| CPU |
Octa-core (1x2.9 GHz Cortex-X1 & 3x2.80 GHz Cortex-A78 & 4x2.2 GHz Cortex-A55)
Octa-core (1x3.63 GHz Cortex-X925 & 3x3.3 GHz Cortex-X4 & 4x2.4 GHz Cortex-A720)
|
| CPU Cores |
8 Cores
8 Cores
|
| Architecture |
64 bit
64 bit
|
| Fabrication |
5 nm
3 nm
|
| GPU |
Mali-G78 MP14
Immortalis-G925
|
Memory
| Internal Storage |
128 GB
256 GB
|
| Storage Type |
UFS 3.1
UFS 4.1
|
| USB OTG |
Yes
Yes
|
| RAM |
8 GB
12 GB
|
| RAM Type |
LPDDR5
N/A
|
| User Available Storage |
Up to 102 GB
N/A
|
Cameras
Main Camera
| Camera Setup |
Triple
Dual
|
| Resolution |
12 MP f/1.8, Wide Angle, Primary Camera, 64 MP f/2.0, Telephoto Camera, 12 MP f/2.2, Ultra-Wide Angle Camera
50 MP, f/1.9, Wide Angle, Primary Camera, 8 MP, Ultra-Wide Angle Camera
|
| Autofocus |
Phase Detection autofocus, Dual Pixel autofocus
Yes
|
| OIS |
Yes
Yes
|
| Flash |
LED Flash
Dual-LED dual-tone flash
|
| Image Resolution |
4000 x 3000 Pixels
8150 x 6150 Pixels
|
| Settings |
Exposure compensation, ISO control
Exposure compensation, ISO control
|
| Zoom |
Digital Zoom
Digital Zoom
|
| Shooting Modes |
Continuous Shooting, High Dynamic Range mode (HDR)
Continuous Shooting, High Dynamic Range mode (HDR)
|
| Aperture |
f/1.8
f/1.9
|
| Camera Features |
Auto Flash, Face detection, Touch to focus
Auto Flash, Face detection, Touch to focus
|
| Video Recording |
7680x4320, 3840x2160, 1920x1080, 1280x720
7680x4320, 3840x2160, 1920x1080
|
| Video FPS |
24 fps, 30 fps, 60 fps, 240 fps, 960 fps
30 fps, 60 fps, 960 fps
|
Selfie Camera
| Camera Setup |
Single
Single
|
| Resolution |
10 MP f/2.2, Wide Angle, Primary Camera
20 MP, Wide Angle, Primary Camera
|
| Autofocus |
Phase Detection autofocus
N/A
|
| Video Recording |
3840x2160
1920x1080
|
| Video FPS |
30 fps, 60 fps
60 fps
|
| Aperture |
f/2.2
N/A
|
Design & Build
| Dimensions |
151.7 x 71.2 x 7.9 mm (5.97 x 2.80 x 0.31 in)
163.1 x 77.9 x 8.2 mm (6.42 x 3.07 x 0.32 in)
|
| Build |
Glass front (Gorilla Glass Victus), plastic back, aluminum frame
Glass front, aluminum frame
|
| Weight |
169 grams
219 grams
|
| Height |
151.7 mm
163.1 mm
|
| Width |
71.2 mm
77.9 mm
|
| Thickness |
7.9 mm
8.2 mm
|
| Colors |
Phantom Gray, Phantom White, Phantom Violet, Phantom Pink
Gray, White, Blue, Green
|
| Waterproof |
Water resistant (up to 30 minutes in a depth of 1.5 meter)
Water resistant (up to 2m for 30 min)
|
| IP Rating |
IP68
IP68
|
| Ruggedness |
Dust proof
Dust proof
|
Battery
| Battery type |
Li-Ion (Lithium-Ion)
Li-Ion (Lithium Ion)
|
| Capacity |
4000 mAh
7410 mAh
|
| Wireless Charging |
15W wireless (Qi/PMA)
N/A
|
| Quick Charging |
25W wired, PD3.0
100W wired, PD3.0
|
| Reverse Charging |
4.5W reverse wireless
N/A
|
| Placement |
Non-removable
Non-removable
|
| Talk Time |
Up to 33 Hours(4G)
N/A
|
| USB Type-C |
USB Type-C 3.2
Yes
|
Network
SIM 1
| Technology |
2G, 3G, 4G, 5G
2G, 3G, 4G, 5G
|
| SIM Size |
Nano
Nano
|
| SIM Slot |
Dual SIM, GSM+GSM
Dual SIM, GSM+GSM
|
| 2G Bands |
GSM 1800 / 1900 / 850 / 900 MHz
GSM 1800 / 850 / 900 MHz
|
| 3G Bands |
UMTS 1900 / 2100 / 850 / 900 MHz
UMTS 2100 / 850 / 900 MHz
|
| 4G Bands |
TD-LTE 2600(band 38) / 2300(band 40) / 2500(band 41) FD-LTE 2100(band 1) / 1800(band 3) / 2600(band 7) / 900(band 8) / 700(band 28) / 1900(band 2) / 1700(band 4) / 850(band 5) / 700(band 17) / 800(band 20) / 850(band 26)
TD-LTE 2600(band 38) / 3500(band 48) / 2300(band 40) / 2500(band 41) / 2100(band 34) / 1900(band 39) / 3500(band 42) FD-LTE 2100(band 1) / 1800(band 3) / 2600(band 7) / 900(band 8) / 700(band 28) / 1700(band 4) / 850(band 5) / 850(band 18) / 850(band 19) / 850(band 26)
|
| 5G Bands |
FDD N1 / N3 / N5 / N7 / N8 / N20 / N26 / N28 / N66 TDD N40 / N41 / N77 / N78
FDD N1 / N3 / N5 / N7 / N8 / N26 / N28 TDD N38 / N40 / N41 / N48 / N66 / N77 / N78
|
| VoLTE |
Yes
Yes
|
| GPRS |
Available
Available
|
| EDGE |
Available
Available
|
| Speed |
HSPA 42.2/5.76 Mbps, LTE (7CA) Cat20 2000/200 Mbps, 5G (5+ Gbps DL)
HSPA, LTE, 5G
|
SIM 2
| Technology |
2G, 3G, 4G, 5G
2G, 3G, 4G, 5G
|
| SIM Size |
eSIM
Nano
|
| SIM Slot |
Dual SIM, GSM+GSM
Dual SIM, GSM+GSM
|
| 2G Bands |
GSM 1800 / 1900 / 850 / 900 MHz
GSM 1800 / 850 / 900 MHz
|
| 3G Bands |
UMTS 1900 / 2100 / 850 / 900 MHz
UMTS 2100 / 850 / 900 MHz
|
| 4G Bands |
TD-LTE 2600(band 38) / 2300(band 40) / 2500(band 41) FD-LTE 2100(band 1) / 1800(band 3) / 2600(band 7) / 900(band 8) / 700(band 28) / 1900(band 2) / 1700(band 4) / 850(band 5) / 700(band 17) / 800(band 20) / 850(band 26)
TD-LTE 2600(band 38) / 3500(band 48) / 2300(band 40) / 2500(band 41) / 2100(band 34) / 1900(band 39) / 3500(band 42) FD-LTE 2100(band 1) / 1800(band 3) / 2600(band 7) / 900(band 8) / 700(band 28) / 1700(band 4) / 850(band 5) / 850(band 18) / 850(band 19) / 850(band 26)
|
| 5G Bands |
FDD N1 / N3 / N5 / N7 / N8 / N20 / N26 / N28 / N66 TDD N40 / N41 / N77 / N78
FDD N1 / N3 / N5 / N7 / N8 / N26 / N28 TDD N38 / N40 / N41 / N48 / N66 / N77 / N78
|
| VoLTE |
Yes
Yes
|
| GPRS |
Available
Available
|
| EDGE |
Available
Available
|
| Speed |
HSPA 42.2/5.76 Mbps, LTE (7CA) Cat20 2000/200 Mbps, 5G (5+ Gbps DL)
HSPA, LTE, 5G
|
Connectivity
| WLAN |
Wi-Fi 6 (802.11 a/b/g/n/ac/ax) 5GHz, MIMO
Wi-Fi 7 (802.11 a/b/g/n/ac/be/ax) 5GHz 6GHz, MIMO
|
| Bluetooth |
v5.0
v5.4
|
| GPS |
Yes with A-GPS, Glonass
Yes with A-GPS, Glonass
|
| Wi-fi Hotspot |
Yes
Yes
|
| NFC |
Yes
Yes
|
| USB |
Mass storage device, USB charging
Mass storage device, USB charging
|
| SAR Value |
Head: 0.74 W/kg, Body: 1.08 W/kg
N/A
|
Multimedia
| Loudspeaker |
With stereo speakers
Yes
|
| Alert Types |
Vibration, MP3, WAV ringtones
N/A
|
| Video |
8K@24fps, 4K@30/60fps, 1080p@30/60/240fps, 720p@960fps
8K@24/30fps, 4K@24/30/60fps, 1080p@30/60/120/240/960fps, gyro-EIS
|
| Audio Jack |
USB Type-C
USB Type-C
|
Sensors & Security
| Light Sensor |
Light sensor, Proximity sensor, Accelerometer, Compass, Gyroscope
Light sensor, Proximity sensor, Accelerometer, Compass, Gyroscope
|
| Fingerprint Sensor |
Yes
Yes
|
| Finger Sensor Position |
On-screen
On-screen
|
| Finger Sensor Type |
Ultrasonic
Ultrasonic
|
| Face Unlock |
Yes
Yes
|
Manufacturer
| First Arrival |
29 January 2021
26 June 2025
|
| Manufactured By |
Samsung
Xiaomi
|
| Availability |
Available
Available
|
| Made By |
Korea
China
|
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