BLU F91 vs Cat S53

Network
2G network

GSM 850, 900, 1800, 1900

GSM 850, 900, 1800, 1900
3G network

HSDPA 850, 1700(AWS), 1900, 2100

HSDPA 800, 850, 900, 1700(AWS), 1900, 2100
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, 17, 18, 19, 20, 25, 26, 28, 34, 38, 39, 40, 41, 66
5G network

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

5G band 1, 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, 600 Mbps download, 150 Mbps upload
GPRS

No

Yes
EDGE

Yes

Yes

Design
Build

-

Aluminium alloy, TPU, polycarbonate
SIM

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

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

168.7 mm

171 mm
Width

76.8 mm

81 mm
Thickness

8.9 mm

16 mm
Weight

209 g

320 g
Waterproof

-

IP68/IP69 (1.5m and 35 minutes)
Dust proof

-

IP68/IP69
Resistance drop

-

1.8m
MIL-STD-810H

-

Yes
Flashlight

-

Yes
Colors

Blue

Black

Main camera
Camera type

Quad

Dual
Main camera

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

(wide) , 48 MP, f/1.8 , 1/2.0" , 0.8 µm
(ultrawide) , 5 MP, f/2.2 , 115˚

(macro) , 2 MP, 1.75 µm
(macro) , 2 MP, f/2.4
(depth) , 2 MP, f/2.4
Primary camera resolution

8000 x 6000 pixels

8000 x 6000 pixels
Primary camera video

4K@30fps, 1080p@30fps

1080p@30fps
Primary camera flash

LED flash

LED flash
Camera features

-

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

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
WLAN WiFi Hotspot

Yes

Yes
WLAN WiFi Direct

Yes

Yes
WLAN WiFi Dual Band

-

Yes
USB

Type-C 2.0

Type-C 3.0
USB On-The-Go

Yes

Yes
Bluetooth

v5.1

v5.1
Bluetooth A2DP

Yes

A2DP
bluetooth LE

LE

LE
NFC

Yes

Yes
GPS

Yes, with A-GPS

Yes, with A-GPS