Realme 3 vs Xiaomi Mi A1

Network
2G network

GSM 850, 900, 1800, 1900

GSM 850, 900, 1800, 1900
3G network

HSDPA 850, 900, 2100

HSDPA 850, 900, 1900, 2100
4G network

LTE frequency band 1(2100), 3(1800), 5(850), 7(2600), 8(900), 20(800), 28(700), 38(2600), 40(2300), 41(2500); LTE frequency band 1(2100), 3(1800), 5(850), 8(900), 38(2600), 40(2300), 41(2500)

LTE frequency band 1(2100), 3(1800), 5(850), 7(2600), 8(900), 20(800), 38(2600), 40(2300)
HSDPA speed

42.2 Mbps

-
HSUPA speed

5.76 Mbps

-
HSPA speed

-

HSPA
LTE speed

LTE-A (2CA), Cat12, 600 Mbps download, 50 Mbps upload

LTE
GPRS

Yes

Yes
EDGE

Yes

Yes

Design
Build

Front glass, plastic body

Front glass, aluminum frame & back
SIM

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

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

156.1 mm

155.4 mm
Width

75.6 mm

75.8 mm
Thickness

8.3 mm

7.3 mm
Weight

175 g

165 g
Colors

Black, Blue

Black, Gold, Rose Gold

Display
Display type

IPS LCD capacitive touchscreen

LTPS IPS LCD capacitive touchscreen
Physical size

6.22 inches

5.5 inches
Resolution

720 x 1520 pixels

1080 x 1920 pixels
Pixel density

270 ppi

403 ppi
Display colors

16777216

16777216
Protection

Scratch resistant, 2.5D curved glass screen, Corning Gorilla Glass 3, LTPS(Low temperature PolySilicon)

Corning Gorilla Glass 3
Multitouch

Yes

Yes

Hardware
CPU

Octa-core

-
CPU

Quad-core 2.0 GHz Cortex-A73

Octa-core 2.0 GHz Cortex-A53 ARM
CPU(second)

quad-core 2.0 GHz Cortex-A53
Chipset

Mediatek MT6771 Helio P60 / Mediatek Helio P70

Qualcomm MSM8953 Snapdragon 625
GPU

Mali-G72 MP3

Adreno 506
Memory RAM

3, 4 GB

4 GB
Internal storage

32, 64 GB

64 GB
Memory card

microSD, microSDHC, microSDXC

microSD(uses second SIM slot)
Memory card max

256 GB

128 GB

Main camera
Camera type

Dual

Dual
Camera type

-

Photo / Video
Main camera

13 MP, f/1.8 , 1/3" , 1.12 µm

12 MP, f/2.2 , 26 mm, 2x optical zoom
2 MP

12 MP, f/2.6 , 50 mm
Primary camera resolution

4160 x 3120 pixels

-
Primary camera video

1080p@30fps

2160p@30fps, 720p@120fps
Primary camera Autofocus

-

phase detection autofocus
Primary camera flash

LED flash

dual-LED (dual tone) flash
Primary camera phase detection autofocus

phase detection autofocus

-
Camera features

Autofocus, continuous shooting, digital zoom, geotagging, panorama, HDR, touch focus, face detection, white balance settings, ISO settings, exposure compensation, self-timer, scene-mode

1.25 µm/ 1.0 µm pixel size, HDR, face detection, geo-tagging, panorama, touch focus

Connectivity
WLAN

Wi-Fi 802.11b, 802.11g, 802.11n

Wi-Fi 802.11a, 802.11b, 802.11g, 802.11n, 802.11ac
WLAN WiFi Hotspot

Yes

Yes
WLAN WiFi Direct

-

Yes
WLAN WiFi Dual Band

-

Yes
USB

microUSB 2.0

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

Yes

-
Bluetooth

v4.2

v4.2
Bluetooth A2DP

Yes

Yes
bluetooth LE

Yes

Yes
Infrared

-

Yes
GPS

Yes, with A-GPS

Yes, with A-GPS
GLONASS

Yes

Yes
BDS

-

Yes

Features
Messaging SMS

-

SMS(threaded view)
Messaging MMS

-

MMS
Messaging Email

-

Email
Messaging IM

-

IM
Messaging Push Mail

-

Push Mail
Java

-

No
Sensors

Accelerometer, compass, fingerprint, proximity

Fingerprint (rear-mounted), accelerometer, gyro, proximity