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Compare 3 products

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Oppo A51 Mobile Phone
Oppo A51
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Samsung Epic 4G Mobile Phone
Samsung Epic 4G
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Xiaomi Redmi 3 Mobile Phone
Xiaomi Redmi 3
Editiorial reviews
1
1 editorial reviews
A good screen paired with not-so-good performanceRead more
Read editorial reviews
14
4.2 out of 5
6 user ratings
5 stars
33 %
4 stars
66 %
3 stars
0 %
2 stars
0 %
1 stars
0 %
Read editorial reviews
9
3.8 out of 5
3 user ratings
5 stars
0 %
4 stars
100 %
3 stars
0 %
2 stars
0 %
1 stars
0 %
Read editorial reviews
User rating
55
4.0 out of 5
55 user ratings
5 stars
36 %
4 stars
32 %
3 stars
25 %
2 stars
3 %
1 stars
1 %
33
4.1 out of 5
33 user ratings
5 stars
33 %
4 stars
48 %
3 stars
15 %
2 stars
3 %
1 stars
0 %
42
4.0 out of 5
42 user ratings
5 stars
35 %
4 stars
33 %
3 stars
28 %
2 stars
2 %
1 stars
0 %

Hardware

Operating systemAndroid 5.1Android 2.3Android 5.1
CPU clock speed1.2 GHz1.0 GHz1.5 GHz
CPU coresQuad-coreSingle-core8-core
CPU modelQualcomm Snapdragon 410 MSM8916Samsung-Intrinsity Hummingbird CoreQualcomm Snapdragon 616 MSM8939v2
GPU modelQualcomm Adreno 306
N/A
Qualcomm Adreno 405
RAM memory2 GB512 MB2 GB

Display

Screen size5.0 in4.0 in5.0 in
Number of colors16.7M16.7M16.7M
Panel typeLCDOLEDLCD
Resolution1280 x 720 px800 x 480 px1280 x 720 px
TechnologyIPS LCDSuper AMOLEDIPS TFT
Pixel density294.0 ppi233.0 ppi294.0 ppi
Multi touchyesyesyes
Screen material
N/A
Corning Gorilla Glass
N/A
Touchscreen
N/A
N/A
yes
Dual screen support
N/A
N/A
no
Scratch resistant display
N/A
N/A
no
HDR
N/A
N/A
no

Rear camera

Primary sensor resolution8.0 Mpx5.0 Mpx13.0 Mpx
Highest video resolution1920 x 1080 px1280 x 720 px1920 x 1080 px
Autofocusyesyesyes
Digital zoomyesyesyes
Geo-taggingyes
N/A
yes
LED Flashyesyesyes
Panorama
N/A
yesyes
Primary lens aperture
N/A
N/A
2.0 f
Video recording
N/A
N/A
yes
Maximum FPS at the highest resolution
N/A
N/A
30.0 fps
Burst Mode
N/A
N/A
yes
Digital Image Stabilization
N/A
N/A
yes
Face detection
N/A
N/A
yes
HDR Capture
N/A
N/A
yes
Smile detection
N/A
N/A
yes
Touch focus
N/A
N/A
yes

Front camera

Primary resolution5.0 Mpx0.3 Mpx5.0 Mpx

Storage

Internal storage16 GB
N/A
16 GB
Memory card readeryesyesyes
Maximum card storage128GB32GB128GB
Types of memory card supportedmicroSDmicroSDmicroSD

Dimensions

Height5.65 in4.88 in5.48 in
Width2.8 in2.56 in2.73 in
Depth0.3 in0.55 in0.33 in
Weight5.64 oz5.47 oz5.08 oz

Sensors

Accelerometeryesyesyes
Proximityyesyesyes
Digital compassyesyesyes
Ambient light sensoryesyesyes
Gyroscope
N/A
N/A
yes

Connectivity

Dual sim supportyesnoyes
Sim card sizeMicro-SIMMini-SIMMicro-SIM
Bluetoothyesyesyes
Bluetooth version4.02.1 EDR4.1
Headphone connection3.5 mm3.5 mm3.5 mm
Type of USB connectorMicro-USBMicro-USB
N/A
Charging connection
N/A
USBUSB
DLNA certified
N/A
N/A
no
Bluetooth profile
N/A
N/A
A2DP
Bluetooth codec
N/A
N/A
SBC
NFC
N/A
N/A
no
USB version
N/A
N/A
2.0
USB On-The-Go (OTG)
N/A
N/A
yes
Video output
N/A
N/A
No

Cellular

Wireless network (Wi-Fi)yesyesyes
Data transmissionHSPA+HSPA+HSPA+
Navigation systemGPSGPSGLONASS
2G GSMyesyesyes
GSM frequencies
  • 900 MHz
  • 1800 MHz
  • 1900 MHz
  • 800 MHz
  • 1900 MHz
  • 850 MHz
  • 900 MHz
  • 1800 MHz
  • 1900 MHz
CDMA frequences
  • 1900 MHz
  • 2000 MHz
  • 800 MHz
  • 1900 MHz
  • 800 MHz
  • 1900 MHz
4G LTEyesyesyes
LTE frequencies
  • 1900 MHz
  • 2600 MHz
N/A
  • 1800 MHz
  • 1900 MHz
  • 2600 MHz
  • 2300 MHz
  • 2500 MHz
Mobile hotspotyesyesyes
Wireless networking standard
N/A
N/A
  • 802.11b
  • 802.11g
  • 802.11n
3G UMTS
N/A
N/A
yes
UMTS frequences
N/A
N/A
  • 850 MHz
  • 900 MHz
  • 1900 MHz
  • 2100 MHz
Streaming standards
N/A
N/A
Miracast

Battery

Battery typeLithium ionLithium ionLithium ion
Battery capacity2420.0 mAh1500.0 mAh4100.0 mAh
Standby time
N/A
300.0 h
N/A
Talk time
N/A
6.0 h
N/A
Replaceable battery
N/A
N/A
no
Fast charging
N/A
N/A
no
Wireless charging
N/A
N/A
no

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