Samsung Galaxy M31 vs T-Mobile Sidekick 4G
Compare recorded specifications, size and practical differences.
T-Mobile Sidekick 4G
Replace
+ Add a third phone
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.
-
Weight
Sidekick 4G: 29 g lighter
- Galaxy M31:
- 191 g
- Sidekick 4G:
- 162 g
-
Width
Sidekick 4G: 14.1 mm narrower
- Galaxy M31:
- 75.1 mm
- Sidekick 4G:
- 61 mm
-
Screen diagonal
Sidekick 4G: 2.9 in smaller diagonal
- Galaxy M31:
- 6.4 in
- Sidekick 4G:
- 3.5 in
-
Rear camera layout
- Galaxy M31:
- Triple
- Sidekick 4G:
- Single
-
Depth
Galaxy M31: 6.1 mm thinner
- Galaxy M31:
- 8.9 mm
- Sidekick 4G:
- 15 mm
-
Height
Sidekick 4G: 32.2 mm shorter
- Galaxy M31:
- 159.2 mm
- Sidekick 4G:
- 127 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 M31
- Height:
- 159.2 mm +32.2 mm versus Sidekick 4G
- Width:
- 75.1 mm +14.1 mm versus Sidekick 4G
- Depth:
- 8.9 mm
2. Sidekick 4G
- Height:
- 127 mm
- Width:
- 61 mm
- Depth:
- 15 mm +6.1 mm versus Galaxy M31
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 M31
- Screen diagonal:
- 6.4 in
- Aspect ratio (height:width):
- 19.5:9
- Approximate rectangular screen area:
- 100.5 cm²
2. Sidekick 4G
- Screen diagonal:
- 3.5 in
- Aspect ratio (height:width):
- 5:3
- Approximate rectangular screen area:
- 34.9 cm²
Galaxy M31 has approximately 188.4% more rectangular screen area than Sidekick 4G.
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 M31 | Sidekick 4G |
|---|---|---|
| 64 GB | 6 GB RAM | Unknown |
| 128 GB | 6 GB RAM | Unknown |
Sidekick 4G: Original memory entry
1 GB · 512 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. Galaxy M31
- NFC:
- See details Yes (market/region dependent)
- Headphone jack:
- Yes
- Memory card support:
- See details microSDXC (dedicated slot)
2. Sidekick 4G
- NFC:
- Unknown
- Headphone jack:
- Yes
- Memory card support:
- See details microSD · up to 32 GB (dedicated slot) · 2 GB included
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 | Galaxy M31 | Sidekick 4G |
|---|---|---|
| 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 |
|
|
| NFC |
|
Unknown |
| Headphone jack |
|
|
Display
| Specification | Galaxy M31 | Sidekick 4G |
|---|---|---|
| Touchscreen |
|
|
| Display colors |
|
|
| Screen area |
|
|
| Screen format |
|
|
| Screen to body ratio |
|
|
| PPI /points per inch/ |
|
|
| Screen protection |
|
Unknown |
Camera and Video
| Specification | Galaxy M31 | Sidekick 4G |
|---|---|---|
| Rear camera, main |
|
|
| Camera specs |
|
|
| Functions |
|
Unknown |
| Video |
|
|
| Front camera, selfie |
|
|
| Specifications |
|
|
Performance
Scores marked * are historical catalogue entries. Test conditions are unspecified; no new testing is implied.
| Specification | Galaxy M31 | Sidekick 4G |
|---|---|---|
| Processor CPU |
|
|
| Graphics processor GPU |
|
|
| Antutu 8 score * |
|
Unknown |
General specs
| Specification | Galaxy M31 | Sidekick 4G |
|---|---|---|
| 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 | Galaxy M31 | Sidekick 4G |
|---|---|---|
| SIM card |
|
|
| Network |
|
|
| Speed |
|
|
| GPRS |
|
|
| Edge |
|
|
| Wi-Fi |
|
|
| GPS |
|
|
| USB |
|
|
| Bluetooth |
|
|
| Harmful irradiation |
|
|
Music and Audio
| Specification | Galaxy M31 | Sidekick 4G |
|---|---|---|
| Radio |
|
|
Other features
| Specification | Galaxy M31 | Sidekick 4G |
|---|---|---|
| Dop |
|
|



