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Samsung Galaxy J7 Duo

  • Supports Indian bands
  • 32 GB + 256 GB Expandable
  • Dual SIM: Micro + Micro
  • Fingerprint sensor
  • USB OTG Support
  • FM Radio

Highlights from Expert Review

  • AMOLED display
  • Acceptable battery life
  • Latest O.S
  • Age-old design
  • Plastic build quality
  • Not so great performance
  • Over priced


Launch DateApril 13, 2018 (Official)
ModelGalaxy J7 Duo
Operating SystemAndroid v8.0 (Oreo)
SIM Slot(s)Dual SIM, GSM+GSM
SIM SizeSIM1: Micro
Network4G: Available (supports Indian bands)
Fingerprint Sensoryes
Quick Charging
Height153.5 mm
Width77.2 mm
Thickness8.2 mm
Weight174 grams
ColoursBlack, Gold
Screen Size5.5 inches (13.97 cm)
Screen ResolutionHD (720 x 1280 pixels)
Aspect Ratio16:9
Pixel Density267 ppi
Display TypeSuper AMOLED
Touch Screenyes
Screen to Body Ratio (calculated)70.21 %
ChipsetSamsung Exynos 7 Octa
ProcessorOcta core, 1.6 GHz
Internal Memory32 GB
Expandable Memoryyes
User Available StorageUp to 21.8 GB
USB OTG Supportyes
Resolution8 MP Front Camera
Physical ApertureF1.9
Optical Image Stabilisation
Image Resolution4128 x 3096 Pixels
SettingsExposure compensation, ISO control
Shooting ModesContinuos Shooting, High Dynamic Range mode (HDR)
Camera FeaturesDigital Zoom, Auto Flash, Face detection, Touch to focus
Video Recording1920x1080 @ 30 fps
Capacity3000 mAh
User Replaceableyes
TalkTimeUp to 20 Hours(3G)
Network & Connectivity
SIM SizeSIM1: Micro, SIM2: Micro
Network Support4G (supports Indian bands), 3G, 2G
SAR ValueHead: 0.478 W/kg
Wi-Fi FeaturesWi-Fi Direct, Mobile Hotspot
USB ConnectivityMass storage device, USB charging, microUSB 2.0
FM Radioyes
Audio Jack3.5 mm
Special Features
Fingerprint Sensoryes
Fingerprint Sensor PositionFront
Other SensorsProximity sensor, Accelerometer
ApplicationsSamsung Pay Mini
Read Full Specifications

Expert Review


The Samsung Galaxy J7 Duo at a price of Rs. 17,000 is not a fair bargain when phones like Redmi Note 5 Pro, Honor 9i, Asus Zenfone Max Pro, Xiaomi Mi A1 are competing in the same price range. It does impress us with an AMOLED panel, but the HD resolution is a let-down, performance is good, but fails on heavy usage, battery life is impressive. On the con side, the device fails terribly on heavy usage especially in gaming; cameras are just average despite sporting dual-rear cameras. So, if you are in the market looking for a smartphone in the sub Rs. 20,000 price segment we feel the Redmi Note 5 is a better buy.


Samsung may not be the top priority when I am in the market to pick up a phone to use it as my daily driver, thanks to the competition from brands like Xiaomi, Lenovo, Motorola, Honor. Samsung managed to lose its place at the top to Xiaomi for two consecutive quarters and is now under a lot of pressure to bring something new to the table so that it can regain its place in the market. But for that to happen, it takes a lot of efforts from Samsung to bring back the trust it somehow lost in the race. The company’s latest launch in India is the Galaxy J7 Duo. While it may sound like just another budget segment phone, it does pack modern features like dual-rear cameras, AMOLED displays. Either Way, we shall find out if the phone is worth the price you are paying in a market that is flooded with many better alternatives. Let’s get started.

The Samsung Galaxy J7 Duo sports a 5.5-inches (1280 x 720 pixels) HD Super AMOLED 2.5D curved glass display. It is powered by a 1.6GHz Octa-Core processor coupled with 4GB RAM and 32GB Internal Storage that is expandable up to 256GB via micro SD card. It runs on Android 8.0 Oreo with Experience U.I on top.

In terms of camera, there are a 13+5MP dual-rear cameras and an 8MP front camera with LED flash, f/1.9 aperture for selfies and video chats. It packs a Fingerprint sensor. Connectivity features include 4G VoLTE, Wi-Fi 802.11, Bluetooth v5, and GPS. A 3000mAh removable battery.

Design & Display:

In the age of 18:9 aspect ratio and modern glass body designs, the Galaxy J7 Duo packs a regular 16:9 aspect ratio that too with a plastic body design. While we can make our peace with the 16:9 display, but a plastic body design on a phone that costs almost Rs. 17,000 is outright unacceptable. The 5.5-inches is comfortable to hold in hands, but the phone packs a wider profile than the regular 5.5-inch phone which might hurt your hands after extended usage. The Antenna bands are smartly hidden in the frame. The rear of the phone has a smooth matte finish. Hence it is slippery at times but doesn’t attract fingerprints fastly. The Galaxy J7 Duo proudly shows off the bezels on top and bottom which repels us from liking the phone at first glance.

Moving to placements, the front houses an 8-megapixel selfie camera, LED flash, usual set of sensors, main earpiece, Samsung branding. Down below the screen is the physical home button with a fingerprint sensor embedded and it is accompanied by the two capacitive keys for back and menu. Like always, these buttons aren’t backlit. On the left, you find the volume rockers. The power button and the speaker grill sit on the right. The 3.5 mm audio jack, a microUSB port, and the primary microphone are present on the bottom. And there is nothing on top. The rear has the 13-megapixel primary camera, LED flash and Samsung branding. The back panel is removable where you have access to SIM, microSD, and battery. Overall, for a phone that costs Rs. 17,000, the Galaxy J7 Duo build quality definitely not worth it.

The Galaxy J7 Duo sports a 5.5-inches (1280 x 720 pixels) HD Super AMOLED 2.5D curved glass display with no protected glass on the top. Since it is an AMOLED panel, the quality of the colors and viewing angles is top notch. The deep blacks and punchy colors look very beautiful and vivid. However, it is a 720p panel which is a huge let down as the lack of sharpness is very much evident when slightly zooming in while browsing or viewing images. The brightness levels are perfect, and we had no issues accessing the content outdoors with maximum brightness. Thankfully, it does have an auto-brightness sensor which when enabled automatically adjusts the brightness depending on the ambient lighting.

Touch response is smooth, and it was able to handle 1080p videos without any issues. Our only complaint with the Galaxy J7 Duo is the 720p panel which is becoming obsolete in the sub Rs. 15,000 to Rs. 20,000 price segment. Just when we were under the assumption that Samsung is changing its way in dealing the budget segment, it goes back to 2016 again to make things even worse.


The Samsung Galaxy J7 Duo is powered by the Exynos 7 Series chipset clocked at 1.6GHz Octa-Core processor coupled with 4GB RAM. While the performance during regular day-to-day casual usage is smooth, apps open up quite fast, and the animations render quite impressive. We didn’t notice any heating issues nor was the device getting warm. However, on heavy and continues usage, the Galaxy J7 Duo struggles a bit to keep up the smoothness. Once the phone starts slowing down, the interface becomes unresponsive; apps tend to take forever to open or respond. Since we are talking about a chipset that is age-old, it is the only thing that needs to be blamed. Despite the presence of very powerful chipsets from Qualcomm or Samsung itself, the company going with old hardware is disheartening.

Moving to gaming, we played games like Asphalt 8, Nova 3, Need for Speed, Riptide GP, PUBG, and to our surprise, the gameplay was decent when the graphics are set to medium or low. We witnessed frame drops and poor graphics when graphics levels are set to high. The gameplay is not entirely disappointing, but it could have been much better. It comes with a Fingerprint sensor on the front, and it is not the fastest in the world but gets the job done. Overall, the performance of the Galaxy J7 Duo is mediocre at best.


The Samsung Galaxy J7 Duo packs a 13+5MP dual-rear cameras and an 8MP front camera with LED flash, f/1.9 aperture for selfies and video chats. The camera interface includes Pro mode, selfie centric features thanks to the LED flash. It also has a Social Share feature which lets you share the selfie directly on social media sites like Facebook, Twitter and other. Moving along, since it comes with dual-rear cameras, there is a live-focus mode which is portrait mode, and it can click acceptable portraits, the edge detection is decent. In daylight and outdoor conditions, the images clicked are impressive with proper colors and detailing. The pictures are bright and vivid. Even the low-light photos are acceptable, though there is a fair bit of noise in them, they are very much usable and social shareable. It comes with pro mode which gives you access to ISO, White balance settings. The HDR mode further brightens the images, but it needs to be enabled every time. The rear camera can record 1080p videos, and the quality of the video is average at best.

The front camera is an 8MP sensor with LED flash, f/1.9 aperture and this results in impressive low-light selfies. The colors and details are on point. The front camera also packs the live-focus mode which lets you adjust the amount of focus you desire. It can record 720p videos, and the quality of the video is decent. There are a host of selfie features like stickers which are useful if you feel like tinkering with your selfies. Overall, the camera of the Samsung Galaxy J7 Duo is acceptable, and can’t stand against the like of Honor 9i, Redmi Note 5 Pro.


The Samsung Galaxy J7 Duo packs a 3000mAh battery and no fast charge support. A 3000mAh is a very generous offering considering the Redmi Note 5 Pro, the recently launched Zenfone Max Pro which packs relatively larger battery capacities. Moving along, with casual to regular usage that includes calls, listen to music, play games, GPS navigation, social media activities, the phone was able to last until the end of the day without any issues. Good for us, the battery doesn’t drain when left ideal or drain drastically on heavy usage. Even with heavy usage that includes continuous gaming, watching movies or browsing with 4G, the phone had no issues lasting until the evening, but then again you will have to charge once again in order to pull through till the end of the day.

We did all our testing with 4G LTE or WiFi turned on most of the time, and We recorded a maximum screen time of over 3 hours 30 minutes which is in the acceptable range. With the bundled charger, the phone took close to 2 hours 30 minutes of time to charge fully from 1% to 100%. Overall, the battery of the Galaxy J7 Duo is acceptable enough but not when you take the pricing into account.

Audio & Video:

The company is bundling a set of earphones within the box, but they are not in-ear style and might hurt your ears after extended usage. The audio quality when tested with the headphones we had was pretty good; it comes with equalizer support so you can tweak the sound profiles to suit your liking. The speaker performance is also loud and can cover an entire room in maximum volume. The default Samsung music player can handle wide-range of audio formats.

Regarding video, the phone can handle 1080p videos, and the quality of the playback is smooth without any freezing or heating issues. Installing MX player gives much more seamless playback experience. Overall, the audio and video playback of the J7 Duo is decent.

Software & Ui:

The Samsung Galaxy J7 Duo runs on Android 8.0 Oreo with Experience U.I on top. The Experience U.I interface removes the app drawer icon, but it indeed is a two-level interface; you will have to swipe up from the bottom of the home screen to access all the apps. But there is also an option to enable the app drawer icon from the theme settings. It also comes with a dedicated Theme Store app where tons of themes, wallpapers, icons, fonts are present, and you can customize the phone any way you prefer. Apart from Google and Samsung default apps, it comes with Microsoft applications which can’t be removed unless rooted. The phone also comes with Samsung Mall which an online shopping aggregator with Bixby’s visual search. For now, E-commerce sites like Amazon, Jabong, Shopclues, and Tata Cliq are on board as Mall partners. The Samsung Mall platform acts as an interface between the e-commerce and customer. It has most Oreo features like multi-window, notification dots.

The Samsung Galaxy J7 Duo packs a 4GB RAM out of which around 2.81GB is free on first boot. The phone was able to handle most of our multitasking needs; we didn’t notice any lags or stutters despite running 5-6 apps at a time. There was no lag in the U.I while browsing or navigating through the interface. Overall, the software department of the Galaxy J7 Duo did impress us.

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