BLU S91 vs Oppo Find X3

Network
2G network

GSM 850, 900, 1800, 1900

GSM 850, 900, 1800, 1900; CDMA 800
3G network

HSDPA 850, 900, 1700, 1900, 2100

HSDPA 800, 850, 900, 1700(AWS), 1900, 2100; CDMA2000 1x
4G network

LTE frequency band 1, 2, 3, 4, 5, 7, 12, 13, 17, 28, 66

LTE frequency band 1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 26, 28, 34, 38, 39, 40, 41, 42, 66 - China
5G network

-

5G band 1, 2, 3, 5, 7, 8, 12, 20, 28, 38, 40, 41, 66, 77, 78, 79 - China
HSDPA speed

42.2 Mbps

42.2 Mbps
HSUPA speed

5.76 Mbps

5.76 Mbps
LTE speed

-

LTE-A
GPRS

Yes

Yes
EDGE

Yes

Yes

Design
Build

-

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

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

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

164.8 mm

163.6 mm
Width

76.3 mm

74 mm
Thickness

8.9 mm

8.3 mm
Weight

202 g

193 g
Waterproof

-

IP68, 1.5m for 30 mins
Dust proof

-

IP68
Colors

Black, Green

Black, Blue, White

Display
Display type

IPS LCD

LTPO AMOLED
Physical size

6.5 inches

6.7 inches
Resolution

720 x 1600 pixels

1440 x 3216 pixels
Pixel density

270 ppi

525 ppi
Display colors

16777216

1073741824
Protection

-

Scratch resistant, 3D curved glass screen, Corning Gorilla Glass 5
Display features

-

120Hz, HDR10+, BT.2020, 500 nits (typ), 1300 nits (peak)

Main camera
Camera type

Triple

Quad
Main camera

(wide) , 13 MP

(wide) , 50 MP, f/1.8 , 25 mm, 1/1.56" , 1.0 µm, 20x digital zoom , 5x
(macro) , 0.3 MP, f/2.4

(telephoto) , 13 MP, f/2.4 , 52 mm, 2x optical zoom
(depth) , 0.3 MP, f/2.4

(ultrawide) , 50 MP, f/2.2 , 110˚ , 1/1.56" , 1.0 µm
(macro) , 3 MP, f/3.0
Primary camera resolution

-

8192 x 6144 pixels
Primary camera video

1080p@30fps

4K@30/60fps, 1080p@30/60/240fps; gyro-EIS; HDR, 10-bit video
Primary camera flash

LED flash

LED flash
Camera features

-

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

Connectivity
WLAN

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

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 3.1
USB On-The-Go

Yes

Yes
Bluetooth

v5.0

v5.2
Bluetooth A2DP

Yes

Yes
bluetooth LE

Yes

Yes
Bluetooth AptX

-

aptX HD
NFC

No

Yes (dual antenna)
GPS

Yes, with A-GPS

Yes, with dual-band A-GPS
GLONASS

-

Yes
GALILEO

-

Yes
BDS

-

Yes
QZSS

-

Yes