Samsung Galaxy J2 Ace vs Samsung Galaxy J7

Key Specs

Battery
2600 mAh	3000 mAh
Display
5.0 inches (12.7 cm)	5.5 inches (13.97 cm)
Front Camera
5 MP	5 MP
Processor
MediaTek MT6737	Samsung Exynos 7 Octa 7580
RAM
1.5 GB	1.5 GB
Rear Camera
8 MP	13 MP

Battery

Capacity
2600 mAh	3000 mAh
Removable
Yes	Yes
TalkTime
-	Up to 18 Hours(3G)
Type
Li-ion	Li-ion
USB Type-C
No	No

Design

Colours
Black, Gold, Silver	Black, Gold, White
Height
144.8 mm	152.4 mm
Thickness
8.9 mm	7.5 mm
Weight
160 grams	171 grams
Width
72.1 mm	78.6 mm

Display

Display Type
TFT	Super AMOLED
Pixel Density
220 ppi Below	267 ppi
Resolution
540x960 px	720x1280 px (HD)
Screen Protection
-	No
Screen Size
5.0 inches (12.7 cm)	5.5 inches (13.97 cm)
Screen to Body Ratio (calculated)
65.86 %	69.46 %
Touch Screen
Yes, Capacitive Touchscreen, Multi-touch	Yes, Capacitive Touchscreen, Multi-touch

Front Camera

Autofocus
-	No
Resolution
5 MP f/2.2, Primary Camera	5 MP f/2.2, Primary Camera

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General

Brand
Samsung	Samsung
Launch Date
January 18, 2017	July 16, 2015
Operating System
Android v6.0 (Marshmallow)	Android v5.1 (Lollipop)

Main Camera

Autofocus
Yes	Yes
Camera Features
Digital Zoom Auto Flash Face detection Touch to focus	Digital Zoom Auto Flash Face detection Touch to focus
Camera Setup
Single	Single
Flash
Yes, LED Flash	Yes, LED Flash
Image Resolution
3264 x 2448 Pixels	4128 x 3096 Pixels
OIS
-	No
Resolution
8 MP f/2.2, Primary Camera	13 MP f/1.9, Primary Camera
Sensor
-	CMOS image sensor
Settings
-	Exposure compensation, ISO control
Shooting Modes
Continuous Shooting High Dynamic Range mode (HDR)	Continuous Shooting High Dynamic Range mode (HDR)
Video Recording
1280x720 @ 30 fps	1920x1080 @ 30 fps

Multimedia

Audio Jack
3.5 mm	3.5 mm
FM Radio
Yes	Yes
Loudspeaker
Yes	Yes

Network & Connectivity

Bluetooth
Yes, v4.2	Yes, v4.1
GPS
Yes with Glonass	Yes with A-GPS, Glonass
HDMI
-	No
NFC
No	No
Network Support
5G Not Supported in India, 4G Supported in India, 3G, 2G	5G Not Supported in India, 4G Supported in India, 3G, 2G
SAR Value
-	Head: 0.571 W/kg
SIM 1
4G Bands: TD-LTE 2600(band 38) / 2300(band 40) FD-LTE 2100(band 1) / 1800(band 3) / 2600(band 7) / 900(band 8) / 700(band 28) / 850(band 5) 3G Bands: UMTS 1900 / 2100 / 850 / 900 MHz 2G Bands: GSM 1800 / 1900 / 850 / 900 MHz GPRS: Available EDGE: Available	4G Bands: TD-LTE 2300(band 40) FD-LTE 2100(band 1) / 1800(band 3) / 2600(band 7) / 900(band 8) / 700(band 28) / 800(band 20) 3G Bands: UMTS 1900 / 2100 / 850 / 900 MHz 2G Bands: GSM 1800 / 1900 / 850 / 900 MHz 4G Speed: 50 Mbit/s ↑ 150 Mbit/s ↓ (LTE category 4) 3G Speed: HSDPA 21.1 Mbit/s ↓, HSUPA 5.76 Mbit/s ↑ GPRS: Available EDGE: Available
SIM 2
2G Bands: GSM 1800 / 1900 / 850 / 900 MHz	4G Bands: TD-LTE 2300(band 40) FD-LTE 2100(band 1) / 1800(band 3) / 2600(band 7) / 900(band 8) / 850(band 5) / 800(band 20) 3G Bands: UMTS 1900 / 2100 / 850 / 900 MHz 2G Bands: GSM 1800 / 1900 / 850 / 900 MHz GPRS: Available EDGE: Available
SIM Size
SIM1: Micro, SIM2: Nano (Hybrid)	SIM1: Micro, SIM2: Micro
SIM Slot(s)
Dual SIM, GSM+GSM	Dual SIM, GSM+GSM
USB Connectivity
microUSB 2.0	Mass storage device, USB charging, microUSB 2.0
VoLTE
Yes	-
Wi-Fi
Yes, Wi-Fi 4 (802.11 b/g/n)	Yes, Wi-Fi 4 (802.11 b/g/n)
Wi-Fi Features
Wi-Fi Direct, Mobile Hotspot	Wi-Fi Direct, Mobile Hotspot

Performance

Architecture
-	64 bit
CPU
Quad core, 1.4 GHz, Cortex A53	Octa core, 1.5 GHz, Cortex A53
Chipset
MediaTek MT6737	Samsung Exynos 7 Octa 7580
Graphics
Mali-T720 MP2	Mali-T720 MP2
RAM
1.5 GB	1.5 GB

Sensors

Fingerprint Sensor
No	No
Other Sensors
Proximity sensor, Accelerometer	Proximity sensor, Accelerometer

Storage

Expandable Memory
Yes, Up to 256 GB	Yes, Up to 128 GB
Internal Memory
8 GB	16 GB
User Available Storage
Up to 3.3 GB	Up to 11.6 GB