BLU F91 vs Samsung Galaxy S21 Ultra 5G

BLU F91

Samsung Galaxy S21 Ultra 5G

Network
2G network

GSM 850, 900, 1800, 1900

GSM 850, 900, 1800, 1900; CDMA 800, 1900 & TD-SCDMA
3G network

HSDPA 850, 1700(AWS), 1900, 2100

HSDPA 850, 900, 1700(AWS), 1900, 2100; CDMA2000 1xEV-DO
4G network

LTE frequency band 2, 4, 5, 12, 13, 17, 25, 26, 41, 66, 71

LTE frequency band 1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 18, 19, 20, 25, 26, 28, 30, 38, 39, 40, 41, 46, 48, 66, 71
5G network

5G band 2, 5, 25, 41, 66, 71, 77 SA/NSA/Sub6

5G band SA/NSA/Sub6/mmWave
HSDPA speed

42.2 Mbps

42.2 Mbps
HSUPA speed

5.76 Mbps

5.76 Mbps
LTE speed

LTE

LTE-A (CA), 2000 Mbps download, 200 Mbps upload
GPRS

No

Yes
EDGE

Yes

Yes

Design
Build

-

Glass front (Gorilla Glass Victus), glass back (Gorilla Glass), aluminum frame
SIM

Dual SIM (Nano-SIM, dual stand-by)

Single SIM (Nano-SIM and/or eSIM) or Dual SIM (Nano-SIM and/or eSIM, dual stand-by)
Height

168.7 mm

165.1 mm
Width

76.8 mm

75.6 mm
Thickness

8.9 mm

8.9 mm
Weight

209 g

227 (Sub6) / 229 (mmWave) g
Payment

-

Samsung Pay (Visa, MasterCard certified)
Waterproof

-

IP68 (1.5m and 30 mins)
Dust proof

-

IP68
Colors

Blue

Black, Brown, Silver, Navy, Titanium

Display
Display type

IPS LCD

Dynamic AMOLED 2X
Physical size

6.8 inches

6.8 inches
Resolution

1080 x 2460 pixels

1440 x 3200 pixels
Pixel density

395 ppi

515 ppi
Display colors

16777216

16777216
Protection

-

Scratch resistant, Corning Gorilla Glass Victus
Display features

-

120Hz, HDR10+, 1500 nits (peak), Infinity-O display, Always-On display
DxOMark display score

-

91

Main camera
Camera type

Quad

Quad
Main camera

(wide) , 48 MP, f/1.8 , 1/2.0" , 0.8 µm, 30x digital zoom

(wide) , 108 MP, f/1.8 , 1/1.33" , 0.8 µm, 26 mm
(ultrawide) , 5 MP, f/2.2 , 115˚

(periscope telephoto) , 10 MP, f/4.9 , 1/3.24" , 1.22 µm, 10x optical zoom
(macro) , 2 MP, f/2.4

(telephoto) , 10 MP, f/2.4 , 70 mm, 1/3.24" , 1.22 µm, 3x optical zoom
(depth) , 2 MP, f/2.4

(ultrawide) , 12 MP, f/2.2 , 13 mm, 1/2.55" , 1.4 µm
Primary camera resolution

8000 x 6000 pixels

12000 x 9000 pixels
Primary camera video

4K@30fps, 1080p@30fps

8K@24fps, 4K@30/60fps, 1080p@30/60/240fps, 720p@960fps, HDR10+, stereo sound rec., gyro-EIS
Primary camera flash

LED flash

LED flash
Camera features

-

Autofocus, continuous shooting, digital zoom, optical zoom, optical image stabilization, geotagging, panorama, HDR, touch focus, face detection, white balance settings, ISO settings, exposure compensation, self-timer, scene-mode, phase detection autofocus, laser autofocus
DxOMark photo

-

128
DxOMark zoom

-

76
DxOMark video

-

98
DxOMark camera score

-

121

Selfie camera
Selfie camera type

Single

-
Selfie camera

16 MP, f/2.0

40 MP, f/2.2 , (wide) , 80˚ , 26 mm, 1/2.8" , 0.7 µm
Selfie camera resolution

-

7968 x 5480 pixels
Selfie camera features

-

Autofocus, HDR, phase detection autofocus
Selfie camera video

1080p@30fps

4K@30/60fps, 1080p@30fps
DxOMark photo

-

105
DxOMark video

-

93
DxOMark camera score

-

100

Connectivity
WLAN

Wi-Fi 802.11b, 802.11g, 802.11n, 802.11ac

Wi-Fi 802.11a, 802.11b, 802.11g, 802.11n, 802.11n 5GHz, 802.11ac, 802.11ax, 6E
WLAN WiFi Hotspot

Yes

Yes
WLAN WiFi Direct

Yes

Yes
WLAN WiFi Dual Band

-

Yes
USB

Type-C 2.0

Type-C 3.2
USB On-The-Go

Yes

Yes
Bluetooth

v5.1

v5.2
Bluetooth A2DP

Yes

Yes
bluetooth LE

LE

Yes
NFC

Yes

Yes
GPS

Yes, with A-GPS

Yes, with A-GPS
GLONASS

-

Yes
GALILEO

-

Yes
BDS

-

Yes