BLU F91 vs Xiaomi Mi Mix Fold

Network
2G network

GSM 850, 900, 1800, 1900

GSM 850, 900, 1800, 1900; CDMA 800
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, 17, 18, 19, 20, 26, 28, 34, 38, 39, 40, 41, 42
5G network

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

5G band 1, 3, 28, 41, 77, 78, 79 SA/NSA
HSDPA speed

42.2 Mbps

42.2 Mbps
HSUPA speed

5.76 Mbps

5.76 Mbps
LTE speed

LTE

LTE-A (CA)
GPRS

No

Yes
EDGE

Yes

Yes

Design
Build

-

Glass front (folded), plastic front (unfolded), glass back (Gorilla Glass 5) or ceramic back, aluminum frame
SIM

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

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

168.7 mm

173.3 mm
Width

76.8 mm

69.8 mm
Thickness

8.9 mm

9 mm
Height unfolded

-

173.3 mm
Width unfolded

-

133.4 mm
Thickness unfolded

-

17.2 mm
Weight

209 g

317 (glass) / 332 (ceramic) g
Colors

Blue

Black, Ceramic

Display
Display type

IPS LCD

Foldable AMOLED
Physical size

6.8 inches

8.01 inches
Resolution

1080 x 2460 pixels

1860 x 2480 pixels
Pixel density

395 ppi

387 ppi
Display colors

16777216

1073741824
Protection

-

Scratch resistant
Display features

-

HDR10+, Dolby Vision, 600 nits (typ), 900 nits (peak)
Cover display

-

AMOLED
Cover display physical size

-

6.52 inches
Cover display resolution

-

840 x 2520 pixels
Cover display features

-

90Hz, HDR10+, Dolby Vision, 650 nits (typ), 900 nits (peak)

Main camera
Camera type

Quad

Triple
Main camera

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

(wide) , 108 MP, f/1.8 , 1/1.52" , 0.7 µm, 80 mm
(ultrawide) , 5 MP, f/2.2 , 115˚

(telephoto/macro) , 8 MP, 3x optical zoom
(macro) , 2 MP, f/2.4

(ultrawide) , 13 MP, f/2.4 , 123 , 1.12 µm
(depth) , 2 MP, f/2.4
Primary camera resolution

8000 x 6000 pixels

-
Primary camera video

4K@30fps, 1080p@30fps

8K@24/30fps, 4K@30/60fps, 1080p@30/60fps, gyro-EIS
Primary camera flash

LED flash

dual LED flash
Camera features

-

Autofocus, continuous autofocus, digital zoom, optical zoom, digital image stabilization, optical image stabilization, geotagging, panorama, HDR, touch focus, face detection, face unlock, white balance settings, ISO settings, exposure compensation, self-timer, scene-mode, phase detection autofocus, laser autofocus, stagger HDR, AI 2.0, night mode 2.0

Selfie camera
Selfie camera type

Single

Single
Selfie camera

16 MP, f/2.0

20 MP, f/2.4 , (wide) , 80˚ , 27 mm, 1/3.4" , 0.8 µm
Selfie camera resolution

-

5184 x 3880 pixels
Selfie camera features

-

Face unlock, HDR, panorama
Selfie camera video

1080p@30fps

1080p@30/60fps, 720p@120fps

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
WLAN WiFi Hotspot

Yes

Yes
WLAN WiFi Direct

Yes

Yes
WLAN WiFi Dual Band

-

Yes
USB

Type-C 2.0

Type-C
USB On-The-Go

Yes

-
Bluetooth

v5.1

v5.2
Bluetooth A2DP

Yes

Yes
bluetooth LE

LE

Yes
Infrared

-

Yes
NFC

Yes

Yes
GPS

Yes, with A-GPS

Yes, with dual-band A-GPS
GLONASS

-

Yes
GALILEO

-

Yes
BDS

-

Yes
QZSS

-

Yes
NavIC

-

Yes

Features
Sensors

Accelerometer, compass, fingerprint, gyroscope, proximity

Accelerometer, barometer, compass, color spectrum, fingerprint, gyroscope, proximity