Samsung Galaxy S6 Duos vs Samsung Galaxy J7 Dual SIM vs Samsung Galaxy S7 CDMA

BASIC INFO
Model No Galaxy S6 Duos - G930A (AT&T, Cricket); G930P (Sprint, Boost, Virgin Mobile); G930V (Verizon); G930T (T-Mobile, Metro PCS); G930R (US Cellular)
Status Available. Available. Released 2015, June release 2016, march
Release Date Released 2015, June 2015, June 2016, February 21
Dimension 143.4 x 70.5 x 6.8 mm (5.65 x 2.78 x 0.27 in) 152.2 x 79.1 x 7.9 mm (5.99 x 3.11 x 0.31 in) 142.4 x 69.6 x 7.9 mm (5.61 x 2.74 x 0.31 in)
Weight 138 g (4.87 oz) 170 g 152 g (5.36 oz)
Colors White Pearl, Black Sapphire, Gold Platinum White, Black Black, White
Body Metrial - - Matel Body
W & D Proof - - IP68 certified - dust proof and water resistant over 1.5 meter and 30 minutes
SIM Type Dual SIM (Nano-SIM, dual stand-by) Dual SIM Nano-SIM
Technology GSM/HSPA/LTE GSM / HSPA / LTE GSM, CDMA, HSPA, EVDO, LTE
OS Android OS, v5.1(Lollipop) Android OS, v5.0.2 (Lollipop) Android OS, v6.0 marshmallow
PROSESSING
Processor Quad-core 1.5 GHz Cortex-A53 & Quad-core 2.1 GHz Cortex-A57 Quad-core 1.4 GHz Cortex-A53 & quad-core 1.0 GHz Cortex-A53 Dual-core 2.15 GHz Kryo & dual-core 1.6 GHz Kryo
Chipset Exynos 7420 Octa Exynos 7580 Octa Qualcomm MSM8996 Snapdragon 820
GPU Mali-T760MP8 Mali-T720MP2 Adreno 530
MEMORY
RAM 3 GB 1GB 4GB
Storage 32/64/128 8GB 32/64GB
Card Slot - up to 128 GB (dedicated slot) up to 128 GB
DISPLAY
Size 5.1 inches (~70.9% screen-to-body ratio) 5.5 inches 5.1 inches 577 ppi pixel density, - IP68 certified - dust proof and water resist
Type Super AMOLED capacitive touchscreen, 16M colors, Fingerprint sensor (PayPal certified) - IP67 certi IPS LCD capacitive touchscreen, 16M colors Super AMOLED capacitive touchscreen, 16M colors
Resolation 1440 x 2560 pixels 720 x 1280 pixels 2560 x 1440 pixels
PPI 576 ppi pixel density 267 ppi pixel density ~576 ppi pixel density
Multi touch Yes Yes Yes
Protection - - Corning Gorilla Glass 4, Always-on display, TouchWiz UI
CAMERA
Primary 16 MP 13 MP, autofocus 12 Mega pixels
Video 2160p@30fps, 1080p@60fps, 720p@120fps, HDR, dual-video rec. Yes, 720p@30fps 2160p@30fps, 1080p@60fps, 720p@120fps, HDR, dual-video rec.
Flash - Led flash LED flash
Features 1/2.6 Yes optical image stabilization, autofocus 1 sensor size, geo-tagging, touch focus, face/smile detection
Selfie 5 MP Yes 5 MP 5 MP, 1080p@30fps, dual video call
BATTERY
Battery Li-Ion battery Li-Ion Li-Ion
Capacity 2550 mAh 3000 mAh 3000 mAh
Removable Non-removable Yes Non-removable
StandBy - - -
Talk Time Up to 17 h (3G) Up to 18 h (3G) -
Music Play Up to 49 h Up to 76 h -
Browsing HTML5 - -
Video Playback - - -
F Charging - - -
W Charging - - -
NETWORK
2G Network GSM 850 / 900 / 1800 / 1900 GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 GSM 850 / 900 / 1800 / 1900 Dual SIM
3G Network HSDPA 850 / 900 / 1900 / 2100 HSDPA 900 / 2100 SIM 1 & SIM 2 HSDPA 850 / 900 / 1700 / 1900 / 2100, CDMA2000 1xEV-DO - G935V
4G Network LTE band 1(2100), 2(1900), 3(1800), 4(1700/2100), 5(850), 7(2600), 8(900), 12(700), 17(700), 18(800), 19(800), 20(800), 26(850) LTE band 1(2100), 3(1800), 7(2600), LTE band 38(2600), 39(1900), 40(2300), 41(2500) LTE band 1(2100), 2(1900), 3(1800), 4(1700/2100), 5(850), 7(2600), 8(900), 12(700), 20(800), 29(700), 30(2300), 38(2600), 39(1900), 40(2300), 41(2500) - G930A, LTE band 2(1900), 3(1800), 4(1700/2100),
Speed HSPA 42.2/5.76 Mbps, LTE Cat6 300/50 Mbps HSPA, LTE Cat4 150/50 Mbps HSPA 42.2/5.76 Mbps, LTE Cat9 450/50 Mbps, EV-DO Rev.A 3.1 Mbps GPRS Yes
5G - - -
CONECTIVY
WALAN Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, hotspot Wi-Fi 802.11 a/b/g/n, dual-band, DLNA, Wi-Fi hotspot Wi-Fi 802.11 a/b/g/n, Wi-Fi hotspot
BlueTooth v4.1, A2DP, LE, aptX Yes, v4.0 with A2DP Yes, v4.0 with A2DP
USB microUSB v2.0, USB Host Yes, microUSB v2.0 Yes, microUSB v2.0, USB Host
GPS Yes, with A-GPS, GLONASS, BDS Yes, with A-GPS support and GLONASS Yes, with A-GPS support and GLONASS
NFC Yes - Yes
Audio jeck 3.5mm Jack - Yes, 3.5 mm
OTHERS
Sensors Fingerprint, accelerometer, gyro, proximity, compass, barometer, heart rate, SpO2 Accelerometer, proximity Fingerprint, accelerometer, gyro, proximity, compass, barometer, heart rate, SpO2
Radio No FM radio TBD
SARUS - - 1.24 W/kg (head), 1.59 W/kg (body)
SAREU - - -
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