Oppo A31 vs Samsung Galaxy S4 CDMA
Compare recorded specifications, size and practical differences.
Samsung Galaxy S4 CDMA
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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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Display technology
OLED versus LCD
- A31:
- LCD
- Galaxy S4 CDMA:
- OLED
-
Weight
Galaxy S4 CDMA: 49.9 g lighter
- A31:
- 180 g
- Galaxy S4 CDMA:
- 130.1 g
-
Width
Galaxy S4 CDMA: 5.9 mm narrower
- A31:
- 75.5 mm
- Galaxy S4 CDMA:
- 69.6 mm
-
Screen diagonal
Galaxy S4 CDMA: 1.5 in smaller diagonal
- A31:
- 6.5 in
- Galaxy S4 CDMA:
- 5 in
-
Rear camera layout
- A31:
- Triple
- Galaxy S4 CDMA:
- Single
-
Height
Galaxy S4 CDMA: 27.2 mm shorter
- A31:
- 163.9 mm
- Galaxy S4 CDMA:
- 136.7 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. A31
- Height:
- 163.9 mm +27.2 mm versus Galaxy S4 CDMA
- Width:
- 75.5 mm +5.9 mm versus Galaxy S4 CDMA
- Depth:
- 8.3 mm
2. Galaxy S4 CDMA
- Height:
- 136.7 mm
- Width:
- 69.6 mm
- Depth:
- 7.9 mm
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. A31
- Screen diagonal:
- 6.5 in
- Aspect ratio (height:width):
- 20:9
- Approximate rectangular screen area:
- 102 cm²
2. Galaxy S4 CDMA
- Screen diagonal:
- 5 in
- Aspect ratio (height:width):
- 16:9
- Approximate rectangular screen area:
- 68.9 cm²
A31 has approximately 48% more rectangular screen area than Galaxy S4 CDMA.
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 | A31 | Galaxy S4 CDMA |
|---|---|---|
| 16 GB | Not recorded | 2 GB RAM |
| 128 GB | 4 GB RAM | Not recorded |
Practical features
Explicit Yes and No values are shown directly. Qualified or regional records retain their details. Unknown means the record is missing.
1. A31
- NFC:
- Unknown
- Headphone jack:
- Yes
- Memory card support:
- See details microSDXC (dedicated slot)
2. Galaxy S4 CDMA
- NFC:
- Yes
- Headphone jack:
- Yes
- Memory card support:
- See details microSD · up to 64 GB (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. A312. Galaxy S4 CDMA
Everyday essentials
| Specification | A31 | Galaxy S4 CDMA |
|---|---|---|
| Dimensions (HxWxD) |
|
|
| Weight |
|
|
| Technology |
|
|
| Screen size |
|
|
| 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 |
|
|
| Battery Capacity is not battery life. No endurance test is implied. |
|
|
| Operating system OS |
|
|
| Chipset |
|
|
| NFC | Unknown |
|
| Headphone jack |
|
|
Display
| Specification | A31 | Galaxy S4 CDMA |
|---|---|---|
| Touchscreen |
|
|
| 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 | Unknown |
|
Camera and Video
| Specification | A31 | Galaxy S4 CDMA |
|---|---|---|
| Rear camera, main |
|
|
| Camera specs |
|
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| Functions |
|
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| Video |
|
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| Front camera, selfie |
|
|
| Specifications |
|
|
Performance
Scores marked * are historical catalogue entries. Test conditions are unspecified; no new testing is implied.
General specs
| Specification | A31 | Galaxy S4 CDMA |
|---|---|---|
| Release date |
|
|
| Colors |
|
|
| Historical recorded price Legacy catalogue value; date unknown. Not a current offer. |
|
|
| Battery life | Unknown |
|
| Body build |
|
Unknown |
Communication and Connectivity
| Specification | A31 | Galaxy S4 CDMA |
|---|---|---|
| SIM card |
|
|
| 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 | Unknown |
|
Music and Audio
| Specification | A31 | Galaxy S4 CDMA |
|---|---|---|
| Radio |
|
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| Others |
|
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Other features
| Specification | A31 | Galaxy S4 CDMA |
|---|---|---|
| Dop |
|
|
