Samsung Galaxy A40 vs Galaxy J3(2017)

Specs compared side by side, measured on real phones shared by owners with the Device Info app.

Key differences

  1. Chipset: the Galaxy A40 uses the Exynos 7904 (14 nm), the Galaxy J3(2017) the Exynos 7570 (14 nm). The Galaxy A40's fastest core runs at 1.77 GHz, the Galaxy J3(2017)'s at 1.43 GHz.
  2. Screen: 5.9 inches on the Galaxy A40, 5 inches on the Galaxy J3(2017). Both run at up to 60 Hz.
  3. Battery: 3,020 mAh on the Galaxy A40, 2,400 mAh on the Galaxy J3(2017).
  4. Main camera: 15.9 MP on the Galaxy A40, 12.9 MP on the Galaxy J3(2017).

Chipset

Chipset
Exynos 7904Exynos 7570
Process
14 nm14 nm
CPU
2× 1.77 GHz Cortex-A73
6× 1.59 GHz Cortex-A53
4× 1.43 GHz Cortex-A53
Top CPU speed
1.77 GHz1.43 GHz
CPU cores
84
GPU
Mali-G71Mali-T720

Memory

Versions seen
4GB | 64GB2GB | 16GB
RAM type
LPDDR4LPDDR3

Display

Size
5.9 in5 in
Resolution
1080 × 2340720 × 1280
Pixel density
439 ppi295 ppi
Refresh rates
60 Hz60 Hz

Battery

Capacity
3,020 mAh2,400 mAh

Cameras

Back camera
15.9 MP4608 × 3456 · f/1.7 · 3.92 mm · OIS12.9 MP4144 × 3106 · f/1.9 · 4.3 mm
Front camera 1
24.8 MP5760 × 4312 · f/2 · 3.75 mm5 MP2576 × 1932 · f/2.4 · 1.86 mm
Front camera 2
16.5 MP4688 × 3516 · f/2 · 3.75 mm—

Megapixels are what Android reports to apps. Many phones combine pixels by default, so the advertised megapixels can be higher.

Connectivity

Wi-Fi
Wi-Fi 6—
6 GHz Wi-Fi
No—
NFC
YesNo
UWB
NoNo
USB host
YesYes

Software

Android
Android 11Android 9
Released with
Android 9Android 7.0
Widevine DRM
L1L3

Sensors

Sensors
26 sensors4 sensors

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From phones shared with the Device Info app · updated November 2026 Hardware specs only. No personal data. Privacy