Cat S31 vs Cat S40
Side-by-side specs and price comparison for buyers in Algeria.
Cat S31
Price coming soon
Cat S40
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
Even
Better display
Cat S31
Lighter body
Cat S40
Best value for money
Even
Full specs comparison
Display
| Spec | Cat S31 | Cat S40 |
|---|---|---|
| Size (inches) | 4.7 | 4.7 |
| Panel Type | — | IPS LCD |
| Resolution Height | 1280 | 960 |
| Resolution Width | 720 | 540 |
| PPI | 312 | 234 |
| Glass Type | Corning Gorilla Glass 3 | Corning Gorilla Glass 4 |
| Screen-to-body | 56.1 | 56.7 |
Platform
| Spec | Cat S31 | Cat S40 |
|---|---|---|
| CPU | Quad-core 1.3 GHz Cortex-A7 | Quad-core 1.1 GHz Cortex-A7 |
| GPU | Adreno 304 | Adreno 304 |
| Chipset Name | Qualcomm MSM8909 Snapdragon 210 | Qualcomm MSM8909 Snapdragon 210 |
| Process (nm) | 28 | 28 |
| OS Name | Android | Android |
| OS Version | 7.0 | 5.1 |
Memory
| Spec | Cat S31 | Cat S40 |
|---|---|---|
| Card Slot | microSDXC (dedicated slot) | microSDXC (dedicated slot) |
| Variants | 16GB 2GB RAM | 16GB 1GB RAM |
Main Camera
| Spec | Cat S31 | Cat S40 |
|---|---|---|
| Video | 720p@30fps | 1080p@60fps |
| Features | LED flash | LED flash |
| Count | 1 | 1 |
| Lens | 8 MP | 8 MP |
Selfie Camera
| Spec | Cat S31 | Cat S40 |
|---|---|---|
| Count | 1 | 1 |
| Lens | 2 MP | 2 MP |
Battery
| Spec | Cat S31 | Cat S40 |
|---|---|---|
| Capacity (mAh) | 4000 | 3000 |
| Chemistry | Li-Ion | Li-Ion |
| stand by | — | Up to 936 h |
| talk time | — | Up to 18 h |
Body
| Spec | Cat S31 | Cat S40 |
|---|---|---|
| SIM | Nano-SIMNano-SIM + Nano-SIM | Nano-SIM |
| Height (mm) | 146 | 144.9 |
| Thickness (mm) | 12.6 | 12.5 |
| Weight (g) | 200 | 185 |
| Width (mm) | 74.4 | 74.1 |
Launch
| Spec | Cat S31 | Cat S40 |
|---|---|---|
| Announced | 2017, September. Released 2017, October | 2015, July. Released 2015, August |
| Status | Discontinued | Discontinued |
Network
| Spec | Cat S31 | Cat S40 |
|---|---|---|
| 2G Bands | GSM 850, 900, 1800, 1900 - SIM 1 & SIM 2 (dual-SIM model only) | GSM 850, 900, 1800, 1900 |
| 3G Bands | HSDPA 850, 900, 1900, 2100 - EU | HSDPA 850, 900, 2100 - Global |
| 4G Bands | 1, 2, 3, 5, 7, 8, 20 - EU | 1, 3, 7, 8, 20 - Global |
| Speed | HSPA 42.2/5.76 Mbps, LTE Cat4 150/50 Mbps | HSPA, LTE Cat4 150/50 Mbps |
| Technology | GSM, HSPA, LTE | GSM, HSPA, LTE |
Connectivity
| Spec | Cat S31 | Cat S40 |
|---|---|---|
| Bluetooth | 4.1 | 4.1 |
| NFC | No | Yes |
| Positioning | GPS, GLONASS, BDS | GPS, GLONASS |
| Radio | FM radio | FM radio |
| USB Version | 2.0 | 2.0 |
| Wi-Fi | Wi-Fi 4 | Wi-Fi 4 |
Sound
| Spec | Cat S31 | Cat S40 |
|---|---|---|
| 3.5mm Jack | Yes | Yes |
| Loudspeaker | Yes | Yes |
Features
| Spec | Cat S31 | Cat S40 |
|---|---|---|
| Sensors | Accelerometer, proximity, compass | Accelerometer, proximity, compass |
Buying advice for Algeria
Both Cat S31 and Cat S40 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.
Other popular comparisons
Samsung Galaxy S26 Ultra vs Apple iPhone 17 Pro Max
Samsung compared to Apple
Samsung Galaxy S26 Ultra vs Google Pixel 10 Pro XL
Samsung compared to Google
Samsung Galaxy S26 Ultra vs Xiaomi 15 Ultra
Samsung compared to Xiaomi
Apple iPhone 17 Pro Max vs Xiaomi 15 Ultra
Apple compared to Xiaomi
Apple iPhone 17 Pro Max vs Google Pixel 10 Pro XL
Apple compared to Google
Samsung Galaxy S26+ vs Apple iPhone 17
Samsung compared to Apple