Samsung Galaxy A3 (2017) vs Samsung Galaxy M31
Compare recorded specifications, size and practical differences.
Samsung Galaxy M31
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Key differences
Calculated from recorded specifications using minimum difference thresholds. These are differences, not an overall ranking. For three phones, numeric highlights compare the two extremes.
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Weight
Galaxy A3 (2017): 53 g lighter
- Galaxy A3 (2017):
- 138 g
- Galaxy M31:
- 191 g
-
Width
Galaxy A3 (2017): 8.9 mm narrower
- Galaxy A3 (2017):
- 66.2 mm
- Galaxy M31:
- 75.1 mm
-
Screen diagonal
Galaxy A3 (2017): 1.7 in smaller diagonal
- Galaxy A3 (2017):
- 4.7 in
- Galaxy M31:
- 6.4 in
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Chipset
- Galaxy A3 (2017):
- Exynos 7870 Octa (14 nm)
- Galaxy M31:
- Exynos 9611 (10nm)
-
Rear camera layout
- Galaxy A3 (2017):
- Single
- Galaxy M31:
- Triple
-
Depth
Galaxy A3 (2017): 1 mm thinner
- Galaxy A3 (2017):
- 7.9 mm
- Galaxy M31:
- 8.9 mm
Physical size
Relative size, not calibrated actual size. Front and side outlines share one scale and a bottom baseline. Generic outlines use recorded body dimensions, excluding camera bumps.
1. Galaxy A3 (2017)
- Height:
- 135.4 mm
- Width:
- 66.2 mm
- Depth:
- 7.9 mm
2. Galaxy M31
- Height:
- 159.2 mm +23.8 mm versus Galaxy A3 (2017)
- Width:
- 75.1 mm +8.9 mm versus Galaxy A3 (2017)
- Depth:
- 8.9 mm +1 mm versus Galaxy A3 (2017)
Weight
Bars start at zero and share a scale within this chart.
Screen size
Approximate rectangular screens calculated from recorded diagonal and aspect ratio at one relative scale. Rounded corners and cutouts are not subtracted. These are not phone outlines or calibrated actual sizes.
1. Galaxy A3 (2017)
- Screen diagonal:
- 4.7 in
- Aspect ratio (height:width):
- 16:9
- Approximate rectangular screen area:
- 60.9 cm²
2. Galaxy M31
- Screen diagonal:
- 6.4 in
- Aspect ratio (height:width):
- 19.5:9
- Approximate rectangular screen area:
- 100.5 cm²
Galaxy M31 has approximately 65.1% more rectangular screen area than Galaxy A3 (2017).
Memory variants
Each row compares the same storage capacity. Cells show recorded RAM alternatives, not combined maxima. Not recorded does not mean unavailable in every market.
| Storage | Galaxy A3 (2017) | Galaxy M31 |
|---|---|---|
| 16 GB | 2 GB RAM | Not recorded |
| 64 GB | Not recorded | 6 GB RAM |
| 128 GB | Not recorded | 6 GB RAM |
Practical features
Explicit Yes and No values are shown directly. Qualified or regional records retain their details. Unknown means the record is missing.
1. Galaxy A3 (2017)
- NFC:
- Yes
- Headphone jack:
- Yes
- Memory card support:
- See details microSD · up to 256 GB (uses SIM 2 slot) - dual SIM model only
2. Galaxy M31
- NFC:
- See details Yes (market/region dependent)
- Headphone jack:
- Yes
- Memory card support:
- See details microSDXC (dedicated slot)
Battery capacity
Capacity is not battery life. No endurance test is implied.
Recorded battery capacity
Bars start at zero and share a scale within this chart.
Specifications
Open a section for more detail. On narrow screens, swipe sideways or use Left/Right arrow keys while the table is focused. Unknown means missing data, not No. Recorded zero values are shown as recorded.
1. Galaxy A3 (2017)2. Galaxy M31
Everyday essentials
| Specification | Galaxy A3 (2017) | Galaxy M31 |
|---|---|---|
| Dimensions (HxWxD) |
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| Weight |
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| Technology |
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| Screen size |
|
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| Screen resolution |
|
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| Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded. |
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| Memory card support |
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| Battery Capacity is not battery life. No endurance test is implied. |
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| Operating system OS |
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| Chipset |
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| NFC |
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| Headphone jack |
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Display
| Specification | Galaxy A3 (2017) | Galaxy M31 |
|---|---|---|
| Touchscreen |
|
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| Display colors |
|
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| Screen area |
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| Screen format |
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| Screen to body ratio |
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| PPI /points per inch/ |
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| Screen protection |
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Camera and Video
| Specification | Galaxy A3 (2017) | Galaxy M31 |
|---|---|---|
| Rear camera, main |
|
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| Camera specs |
|
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| Functions |
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| Video |
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| Front camera, selfie |
|
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| Specifications |
|
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Performance
Scores marked * are historical catalogue entries. Test conditions are unspecified; no new testing is implied.
| Specification | Galaxy A3 (2017) | Galaxy M31 |
|---|---|---|
| Processor CPU |
|
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| Graphics processor GPU |
|
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| Antutu 7 score * |
|
Unknown |
| GeekBench 4 Single Core * |
|
Unknown |
| GeekBench 4 Multi-Core * |
|
Unknown |
| GeekBench 4 RenderScript * |
|
Unknown |
| Antutu 8 score * | Unknown |
|
| GeekBench 4 Battery * |
|
Unknown |
General specs
| Specification | Galaxy A3 (2017) | Galaxy M31 |
|---|---|---|
| Release date |
|
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| Colors |
|
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| Historical recorded price Legacy catalogue value; date unknown. Not a current offer. |
|
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| Battery life |
|
Unknown |
| Body build |
|
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Communication and Connectivity
| Specification | Galaxy A3 (2017) | Galaxy M31 |
|---|---|---|
| SIM card |
|
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| Network |
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| Speed |
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| GPRS |
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| Edge |
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| Wi-Fi |
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| GPS |
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| USB |
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| Bluetooth |
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| Harmful irradiation |
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Music and Audio
| Specification | Galaxy A3 (2017) | Galaxy M31 |
|---|---|---|
| Radio |
|
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| Others |
|
Unknown |
Other features
| Specification | Galaxy A3 (2017) | Galaxy M31 |
|---|---|---|
| Dop |
|
|
