Nokia N81 8GB

Samsung Galaxy A51

browser

java

Yes

os

Android 10.0; One UI 2

General

8GB Built-in, 96 MB RAM

RAM

6 GB

ROM

128 GB

Slot

No

expandable

512 GB

CPU

Octa-core (4x2.3 GHz Cortex-A73 & 4x1.7 GHz Cortex-A53)

GPU

Mali-G72 MP3

SoC

Exynos 9611 (10nm)

number of cores

8core

General

2 Megapixel || Video: Yes, 15fps

Video

MPEG4, 3GPP, RealVideo 7, RealVideo 8, RealVideo 9, RealVideo 10,

2160p@30fps, 1080p@30/60/120fps; gyro-EIS

features

LED flash, panorama, HDR

primary

Quad:
48 MP, f/2.0, 26mm (wide), 1/2.0", 0.8m, PDAF
12 MP, f/2.2, 12mm (ultrawide)
5 MP, f/2.4, 25mm (macro), 1/5.0", 1.12m
5 MP, f/2.2, (depth)

secondary

32 MP, f/2.2, 26mm (wide), 1/2.8", 0.8m

Stand By

410 Hour

Talk Time

4 Hour

capacity

4000mAh

charging

Fast battery charging 15W

type

Li-Polymer (non-removable)

Display

240*320

Super AMOLED capacitive touchscreen, 16M colors, 102.0 cm2 (~87.4% screen-to-body ratio)

SIM

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

Weight

140 gm gm

172 gm

build

Glass front (Gorilla Glass 3), plastic back, plastic frame

dimension

158.5 x 73.6 x 7.9 mm

protection

Corning Gorilla Glass 3

resolution

1080 x 2400 pixels, 20:9 ratio (~405 ppi density)

screen

6.5"

GPS

Yes, with A-GPS, GLONASS, GALILEO, BDS

NFC

Yes

USB

Yes

2.0, Type-C 1.0 reversible connector, USB On-The-Go

bluetooth

Yes, v2.0

5.0, A2DP, LE

internet

GPRS: Class 10 || EDGE: Yes

2G/3G/4G/LTE

wifi

Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, hotspot

radio

FM Radio

General

Phonebook: Practically unlimited entries and fields

sensors

Fingerprint (under display, optical), accelerometer, gyro, proximity, compass, ANT+