Micromax A57 Ninja 3.0 vs ZTE Open II
Compare recorded specifications, size and practical differences.
ZTE Open II
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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.
-
Width
Open II: 1 mm narrower
- A57 Ninja 3.0:
- 62 mm
- Open II:
- 61 mm
-
Depth
Open II: 1 mm thinner
- A57 Ninja 3.0:
- 11.5 mm
- Open II:
- 10.5 mm
-
Height
A57 Ninja 3.0: 2 mm shorter
- A57 Ninja 3.0:
- 116 mm
- Open II:
- 118 mm
-
Release year
- A57 Ninja 3.0:
- 2012
- Open II:
- 2014
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. A57 Ninja 3.0
- Height:
- 116 mm
- Width:
- 62 mm +1 mm versus Open II
- Depth:
- 11.5 mm +1 mm versus Open II
- Weight:
- 93.8 g
2. Open II
- Height:
- 118 mm +2 mm versus A57 Ninja 3.0
- Width:
- 61 mm
- Depth:
- 10.5 mm
- Weight:
- Unknown
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. A57 Ninja 3.0
- Screen diagonal:
- 3.5 in
- Aspect ratio (height:width):
- 3:2
- Approximate rectangular screen area:
- 36.5 cm²
2. Open II
- Screen diagonal:
- 3.5 in
- Aspect ratio (height:width):
- 3:2
- Approximate rectangular screen area:
- 36.5 cm²
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.
No unambiguous storage/RAM pairings are recorded. See the original specifications below.
A57 Ninja 3.0: Original memory entry
512 MB RAM · 256 MB
Open II: Original memory entry
2 GB · 256 MB 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. A57 Ninja 3.0
- NFC:
- Unknown
- Headphone jack:
- Yes
- Memory card support:
- See details microSD · up to 32 GB (dedicated slot)
2. Open II
- NFC:
- Unknown
- Headphone jack:
- Yes
- Memory card support:
- See details microSD · up to 32 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.
Everyday essentials
| Specification | A57 Ninja 3.0 | Open II |
|---|---|---|
| Dimensions (HxWxD) |
|
|
| Weight |
|
|
| Technology |
|
|
| Screen size |
|
|
| Screen resolution |
|
|
| Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded. |
|
|
| Memory card support |
|
|
| Battery Capacity is not battery life. No endurance test is implied. |
|
|
| Operating system OS |
|
|
| Chipset | Unknown |
|
| Headphone jack |
|
|
Display
| Specification | A57 Ninja 3.0 | Open II |
|---|---|---|
| Touchscreen |
|
|
| Display colors |
|
Unknown |
| Screen area |
|
|
| Screen format |
|
|
| Screen to body ratio |
|
|
| PPI /points per inch/ |
|
|
Camera and Video
| Specification | A57 Ninja 3.0 | Open II |
|---|---|---|
| Rear camera, main |
|
|
| Camera specs |
|
|
| Video |
|
|
| Front camera, selfie |
|
|
Performance
Scores marked * are historical catalogue entries. Test conditions are unspecified; no new testing is implied.
| Specification | A57 Ninja 3.0 | Open II |
|---|---|---|
| Processor CPU |
|
|
| Graphics processor GPU |
|
|
| Antutu 7 score * | Unknown |
|
General specs
| Specification | A57 Ninja 3.0 | Open II |
|---|---|---|
| Release date |
|
|
| Colors |
|
|
| Historical recorded price Legacy catalogue value; date unknown. Not a current offer. |
|
Unknown |
| Battery life |
|
Unknown |
Communication and Connectivity
| Specification | A57 Ninja 3.0 | Open II |
|---|---|---|
| SIM card |
|
|
| Network |
|
|
| Speed |
|
|
| GPRS |
|
|
| Edge |
|
|
| Wi-Fi |
|
|
| GPS |
|
Unknown |
| USB |
|
|
| Bluetooth |
|
|
| Harmful irradiation |
|
Unknown |
Music and Audio
| Specification | A57 Ninja 3.0 | Open II |
|---|---|---|
| Radio |
|
|
Other features
| Specification | A57 Ninja 3.0 | Open II |
|---|---|---|
| Dop |
|
|