Cat B15 Q vs Cat S31
Side-by-side specs and price comparison for buyers in Algeria.
Cat B15 Q
Price coming soon
Cat S31
Price coming soon
Quick Verdict
Who wins each category, side by side.
Better price
Even
Faster chip
Even
Bigger battery
Cat S31
Faster charging
Even
Higher-resolution camera
Cat S31
Better display
Cat S31
Lighter body
Cat B15 Q
Best value for money
Even
Full specs comparison
Display
| Spec | Cat B15 Q | Cat S31 |
|---|---|---|
| Size (inches) | 4 | 4.7 |
| Resolution Height | 800 | 1280 |
| Resolution Width | 480 | 720 |
| PPI | 233 | 312 |
| Glass Type | Corning Gorilla Glass | Corning Gorilla Glass 3 |
| Screen-to-body | 52.4 | 56.1 |
Platform
| Spec | Cat B15 Q | Cat S31 |
|---|---|---|
| CPU | Quad-core 1.3 GHz Cortex-A7 | Quad-core 1.3 GHz Cortex-A7 |
| GPU | Mali-400MP2 | Adreno 304 |
| Chipset Name | Mediatek MT6582M | Qualcomm MSM8909 Snapdragon 210 |
| Process (nm) | 28 | 28 |
| OS Name | Android | Android |
| OS Version | 4.4.2 | 7.0 |
Memory
| Spec | Cat B15 Q | Cat S31 |
|---|---|---|
| Card Slot | microSDHC | microSDXC (dedicated slot) |
| Variants | 4GB 1GB RAM | 16GB 2GB RAM |
Main Camera
| Spec | Cat B15 Q | Cat S31 |
|---|---|---|
| Video | 1080p@30fps | 720p@30fps |
| Features | LED flash | LED flash |
| Count | 1 | 1 |
| Lens | 5 MP | 8 MP |
Selfie Camera
| Spec | Cat B15 Q | Cat S31 |
|---|---|---|
| Count | — | 1 |
| Lens | — | 2 MP |
Battery
| Spec | Cat B15 Q | Cat S31 |
|---|---|---|
| Capacity (mAh) | 2000 | 4000 |
| Chemistry | Li-Ion | Li-Ion |
| stand by | Up to 504 h | — |
| talk time | Up to 16 h | — |
Body
| Spec | Cat B15 Q | Cat S31 |
|---|---|---|
| SIM | Dual SIM (Mini-SIM, dual stand-by) | Nano-SIMNano-SIM + Nano-SIM |
| Height (mm) | 125 | 146 |
| Thickness (mm) | 15 | 12.6 |
| Weight (g) | 170 | 200 |
| Width (mm) | 69.5 | 74.4 |
Launch
| Spec | Cat B15 Q | Cat S31 |
|---|---|---|
| Announced | 2014, Q2. Released 2014, June | 2017, September. Released 2017, October |
| Status | Discontinued | Discontinued |
Network
| Spec | Cat B15 Q | Cat S31 |
|---|---|---|
| 2G Bands | GSM 850, 900, 1800, 1900 - SIM 1 & SIM 2 | GSM 850, 900, 1800, 1900 - SIM 1 & SIM 2 (dual-SIM model only) |
| 3G Bands | HSDPA 850, 900, 2100 - EU, EMEA | HSDPA 850, 900, 1900, 2100 - EU |
| 4G Bands | — | 1, 2, 3, 5, 7, 8, 20 - EU |
| Speed | HSPA 21.1/5.76 Mbps | HSPA 42.2/5.76 Mbps, LTE Cat4 150/50 Mbps |
| Technology | GSM, HSPA | GSM, HSPA, LTE |
Connectivity
| Spec | Cat B15 Q | Cat S31 |
|---|---|---|
| Bluetooth | 4 | 4.1 |
| NFC | No | No |
| Positioning | GPS | GPS, GLONASS, BDS |
| Radio | FM radio | FM radio |
| USB Version | 2.0 | 2.0 |
| Wi-Fi | Wi-Fi 4 | Wi-Fi 4 |
Sound
| Spec | Cat B15 Q | Cat S31 |
|---|---|---|
| 3.5mm Jack | Yes | Yes |
| Loudspeaker | Yes | Yes |
Features
| Spec | Cat B15 Q | Cat S31 |
|---|---|---|
| Sensors | Accelerometer, proximity | Accelerometer, proximity, compass |
Buying advice for Algeria
Both Cat B15 Q and Cat S31 are sold in Algeria, but they fit different priorities.
Cat S31 packs a 4000 mAh battery, which translates to longer screen-on time when you are away from a charger.
Cat S31 reaches a higher main-sensor resolution at 8 MP, which helps with crops and lower-light photos.
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