Amazon Fire Phone vs LG Optimus LTE SU640
Compare recorded specifications, size and practical differences.
LG Optimus LTE SU640
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
Optimus LTE SU640: 25 g lighter
- Fire Phone:
- 160 g
- Optimus LTE SU640:
- 135 g
-
Width
Fire Phone: 1.4 mm narrower
- Fire Phone:
- 66.5 mm
- Optimus LTE SU640:
- 67.9 mm
-
Screen diagonal
Optimus LTE SU640: 0.2 in smaller diagonal
- Fire Phone:
- 4.7 in
- Optimus LTE SU640:
- 4.5 in
-
Chipset
- Fire Phone:
- Qualcomm Snapdragon 800 (28 nm)
- Optimus LTE SU640:
- Qualcomm MSM8660 Snapdragon S3
-
Depth
Fire Phone: 1.5 mm thinner
- Fire Phone:
- 8.9 mm
- Optimus LTE SU640:
- 10.4 mm
-
Height
Optimus LTE SU640: 6.3 mm shorter
- Fire Phone:
- 139.2 mm
- Optimus LTE SU640:
- 132.9 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. Fire Phone
- Height:
- 139.2 mm +6.3 mm versus Optimus LTE SU640
- Width:
- 66.5 mm
- Depth:
- 8.9 mm
2. Optimus LTE SU640
- Height:
- 132.9 mm
- Width:
- 67.9 mm +1.4 mm versus Fire Phone
- Depth:
- 10.4 mm +1.5 mm versus Fire Phone
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. Fire Phone
- Screen diagonal:
- 4.7 in
- Aspect ratio (height:width):
- 16:9
- Approximate rectangular screen area:
- 60.9 cm²
2. Optimus LTE SU640
- Screen diagonal:
- 4.5 in
- Aspect ratio (height:width):
- 16:9
- Approximate rectangular screen area:
- 55.8 cm²
Fire Phone has approximately 9.1% more rectangular screen area than Optimus LTE SU640.
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 | Fire Phone | Optimus LTE SU640 |
|---|---|---|
| 4 GB | Not recorded | 1 GB RAM |
| 32 GB | 2 GB RAM | Not recorded |
| 64 GB | 2 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. Fire Phone
- NFC:
- Yes
- Headphone jack:
- Yes
- Memory card support:
- See details panorama
2. Optimus LTE SU640
- NFC:
- Unknown
- Headphone jack:
- Yes
- Memory card support:
- See details microSD · up to 32 GB (dedicated slot) · 16 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 | Fire Phone | Optimus LTE SU640 |
|---|---|---|
| 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 | Fire Phone | Optimus LTE SU640 |
|---|---|---|
| Touchscreen |
|
|
| Display colors |
|
|
| Screen area |
|
|
| Screen format |
|
|
| Screen to body ratio |
|
|
| PPI /points per inch/ |
|
|
| Screen protection |
|
Unknown |
Camera and Video
| Specification | Fire Phone | Optimus LTE SU640 |
|---|---|---|
| Rear camera, main |
|
|
| Camera specs |
|
|
| Functions |
|
|
| Video |
|
|
| Front camera, selfie |
|
|
| Specifications |
|
|
Performance
Scores marked * are historical catalogue entries. Test conditions are unspecified; no new testing is implied.
| Specification | Fire Phone | Optimus LTE SU640 |
|---|---|---|
| Processor CPU |
|
|
| Graphics processor GPU |
|
|
| Antutu 7 score * |
|
Unknown |
| GeekBench 4 Single Core * |
|
Unknown |
| GeekBench 4 Multi-Core * |
|
Unknown |
General specs
| Specification | Fire Phone | Optimus LTE SU640 |
|---|---|---|
| Release date |
|
|
| Colors |
|
|
| Historical recorded price Legacy catalogue value; date unknown. Not a current offer. |
|
|
| Battery life |
|
|
Communication and Connectivity
| Specification | Fire Phone | Optimus LTE SU640 |
|---|---|---|
| SIM card |
|
|
| Network |
|
|
| Speed |
|
|
| GPRS |
|
|
| Edge |
|
|
| Wi-Fi |
|
|
| GPS |
|
|
| USB |
|
|
| Bluetooth |
|
|
Music and Audio
| Specification | Fire Phone | Optimus LTE SU640 |
|---|---|---|
| Radio |
|
|
| Others |
|
|
Other features
| Specification | Fire Phone | Optimus LTE SU640 |
|---|---|---|
| Dop |
|
|



