Screen size
Galaxy J7 Duo5.5"
Galaxy Tab S12+Winner: 12.6"+56%
Quick verdict
Galaxy Tab S12+ leads the measured specs 17-3.
Measured wins
Galaxy J7 Duo
3
spec wins
Ties
3
equal specs
Galaxy Tab S12+
17
spec wins
Overall winner
Screen size
Technology
Galaxy J7 Duo
GSM / HSPA / LTE
Galaxy Tab S12+
GSM / HSPA / LTE / 5G
2G bands
Galaxy J7 Duo
GSM 850 / 900 / 1800 / 1900
Galaxy Tab S12+
GSM 850 / 900 / 1800 / 1900
3G bands
Galaxy J7 Duo
HSDPA 850 / 900 / 1900 / 2100 - International, HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 - USA
Galaxy Tab S12+
HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100
4G bands
Galaxy J7 Duo
Resolution
Refresh rate
Peak brightness
Pixel density
CPU speed
RAM
Storage
Main camera
equal specsFront camera
Battery
Wired charging
Weight
Thickness
IP rating
Wi‑Fi
Bluetooth
USB
5G support
NFC
equal specs3.5mm jack
SD card
equal specsStereo speakers
1, 3, 5, 7, 8, 20, 38, 40, 41 - International, 1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 28, 38, 40, 41, 66 - USA
Galaxy Tab S12+
1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 32, 38, 39, 40, 41, 66
Speed
Galaxy J7 Duo
HSPA 42.2/5.76 Mbps, LTE Cat4 150/50 Mbps
Galaxy Tab S12+
HSPA, LTE, 5G - cellular model only
5G bands
Galaxy J7 Duo
-
Galaxy Tab S12+
1, 2, 3, 5, 7, 8, 12, 20, 25, 26, 28, 38, 40, 41, 66, 71, 75, 77, 78 SA/NSA/Sub6
Announced
Galaxy J7 Duo
2018, April. Released 2018, April
Galaxy Tab S12+
2026, September 30
Status
Galaxy J7 Duo
Discontinued
Galaxy Tab S12+
Available. Released 2026, October 07
Dimensions
Galaxy J7 Duo
153.5 x 77.2 x 8.2 mm (6.04 x 3.04 x 0.32 in)
Galaxy Tab S12+
289.5 x 187.8 x 5.3 mm (11.40 x 7.39 x 0.21 in)
Weight
Galaxy J7 Duo
174 g (6.14 oz)
Galaxy Tab S12+
553 g or 555 g (1.22 lb)
SIM
Galaxy J7 Duo
Single SIM (Micro-SIM) or Dual SIM (Micro-SIM, dual stand-by)
Galaxy Tab S12+
Nano-SIM + eSIM (cellular model only)
Build
Galaxy J7 Duo
-
Galaxy Tab S12+
Glass front, aluminum frame, aluminum back
Other
Galaxy J7 Duo
-
Galaxy Tab S12+
IP68 dust tight and water resistant (immersible up to 1.5m for 30 min) Stylus support Enhanced Armor Aluminum
Type
Galaxy J7 Duo
Super AMOLED
Galaxy Tab S12+
Dynamic AMOLED 2X, 120Hz, HDR10+, 1000 nits (HBM), 1600 nits (peak)
Size
Galaxy J7 Duo
5.5 inches, 83.4 cm2 (~70.4% screen-to-body ratio)
Galaxy Tab S12+
12.6 inches, 460.6 cm2 (~84.7% screen-to-body ratio)
Resolution
Galaxy J7 Duo
720 x 1280 pixels, 16:9 ratio (~267 ppi density)
Galaxy Tab S12+
1752 x 2800 pixels, 16:10 ratio (~262 ppi density)
OS
Galaxy J7 Duo
Android 8.0 (Oreo), upgradable to Android 9.0 (Pie)
Galaxy Tab S12+
Android 17, up to 7 major OS updates, One UI 9
Chipset
Galaxy J7 Duo
Exynos 7885 (14 nm)
Galaxy Tab S12+
MediaTek Dimensity 9500 (3 nm)
CPU
Galaxy J7 Duo
Octa-core (2x2.2 GHz Cortex-A73 & 6x1.6 GHz Cortex-A53)
Galaxy Tab S12+
Octa-core (1x4.21 GHz C1-Ultra & 3x3.5 GHz C1-Premium & 4x2.7 GHz C1-Pro)
GPU
Galaxy J7 Duo
Mali-G71
Galaxy Tab S12+
Mali-G1 Ultra MC12
Card slot
Galaxy J7 Duo
microSDXC (dedicated slot)
Galaxy Tab S12+
microSDXC (dedicated slot)
Internal
Galaxy J7 Duo
32GB 3GB RAM, 32GB 4GB RAM
Galaxy Tab S12+
256GB 12GB RAM, 512GB 12GB RAM
Other
Galaxy J7 Duo
eMMC 5.1
Galaxy Tab S12+
UFS
Dual
Galaxy J7 Duo
13 MP, f/1.9, AF Auxiliary lens
Galaxy Tab S12+
-
Features
Galaxy J7 Duo
LED flash, panorama, HDR
Galaxy Tab S12+
LED flash, HDR, panorama
Video
Galaxy J7 Duo
1080p@30fps
Galaxy Tab S12+
4K@30fps, 1080p@30fps
Single
Galaxy J7 Duo
-
Galaxy Tab S12+
13 MP, f/2.0, 26mm (wide), 1/3.4", 1.0µm, AF
Single
Galaxy J7 Duo
8 MP, f/1.9
Galaxy Tab S12+
12 MP, f/2.4, 120˚ (ultrawide)
Features
Galaxy J7 Duo
LED flash
Galaxy Tab S12+
HDR
Video
Galaxy J7 Duo
1080p@30fps
Galaxy Tab S12+
4K@30fps, 1080p@30fps
Loudspeaker
Galaxy J7 Duo
Yes
Galaxy Tab S12+
Yes, with stereo speakers (4 speakers)
3.5mm jack
Galaxy J7 Duo
Yes
Galaxy Tab S12+
No
WLAN
Galaxy J7 Duo
Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct
Galaxy Tab S12+
Wi-Fi 802.11 a/b/g/n/ac/6e, tri-band, Wi-Fi Direct
Bluetooth
Galaxy J7 Duo
4.2, A2DP, LE
Galaxy Tab S12+
6.0, A2DP, LE
Positioning
Galaxy J7 Duo
GPS, GLONASS, BDS
Galaxy Tab S12+
GPS, GLONASS, BDS, GALILEO
NFC
Galaxy J7 Duo
No
Galaxy Tab S12+
No
Radio
Galaxy J7 Duo
FM radio
Galaxy Tab S12+
No
USB
Galaxy J7 Duo
microUSB 2.0
Galaxy Tab S12+
USB Type-C 3.2, magnetic connector
Sensors
Galaxy J7 Duo
Fingerprint (front-mounted), accelerometer, proximity
Galaxy Tab S12+
Fingerprint (under display, optical), accelerometer, gyro, proximity, compass
Other
Galaxy J7 Duo
ANT+
Galaxy Tab S12+
Wireless Samsung DeX (desktop experience support)
Type
Galaxy J7 Duo
Li-Ion 3000 mAh, removable
Galaxy Tab S12+
Li-Po 10600 mAh
Charging
Galaxy J7 Duo
-
Galaxy Tab S12+
45W wired, 100% in 95 min
Colors
Galaxy J7 Duo
Black, Gold, Rose Gold, White, Blue
Galaxy Tab S12+
Gray, Silver
Models
Galaxy J7 Duo
SM-J720F, SM-J720F/DS, SM-J720M, SM-J720M/DS
Galaxy Tab S12+
SM-X840, SM-X846
SAR EU
Galaxy J7 Duo
0.54 W/kg (head) 1.40 W/kg (body)
Galaxy Tab S12+
0.77 W/kg (body)
Price
Galaxy J7 Duo
About 240 EUR
Galaxy Tab S12+
About 1330 EUR