The verdict
Neither runs away with it: each wins something.
| Category | S61 | K8 |
|---|---|---|
| Design & display | 4.4 | 4.7 |
| Performance & hardware | 2.9 | 2.9 |
| Camera | 2.1 | 3.3 |
| Connectivity | 5.3 | 3.7 |
| Battery & charging | 4.5 | 3.8 |
Which one is for you?
Cat S61, if you care about…
- Battery Capacity
- 4,500 mAh
- against 4,000 mAh
- RAM Capacity
- 4 GB
- against 3 GB
- Bluetooth Version
- Bluetooth 5.0
- against Bluetooth 4.2
- Maximum Storage Capacity
- 64 GB
- against 32 GB
Lenovo K8, if you care about…
- Storage Type
- eMMC 5.1
- against eMMC 4.5
- Weight
- 165 g
- against 250 g
- Usable Surface
- 68.4 %
- against 58.6 %
- Body Thickness
- 8.6 mm
- against 13 mm
Specification comparison
Performance
| Specification | S61 | K8 |
|---|---|---|
| Processor Model | Qualcomm Snapdragon 630 | MediaTek Helio P20 |
| Processor Process Size | 14 nm Best value | 16 nm |
| Graphics GPU | Qualcomm Adreno 508 | ARM Mali-T880 MP2 |
| Storage Type | eMMC 4.5 | eMMC 5.1 Best value |
| Maximum CPU Clock | 2.2 GHz | 2.35 GHz Best value |
| Maximum Storage Capacity | 64 GB Best value | 32 GB |
| CPU Description | Octa-core 2.2 GHz Cortex-A53 | Octa-core processor with 4 cores at 2.35 GHz and 4 cores at 1.65 GHz, using Cortex-A53 cores. |
| Processor Type | Octa-Core | Octa-Core |
| 64-Bit Processor | Yes | Yes |
| RAM Capacity | 4 GB Best value | 3 GB |
| RAM Type | — | DDR4 |
| Expandable Storage | Yes | Yes |
| Maximum memory card | 256 GB Best value | 128 GB |
Design
| Specification | S61 | K8 |
|---|---|---|
| Body Colors | Black | Black, White, Gold |
| Body Thickness | 13 mm | 8.6 mm Best value |
| Body Width | 78 mm | 73.7 mm |
| Body Height | 163 mm | 147.9 mm |
| Weight | 250 g | 165 g Best value |
| Usable Surface | 58.6 % | 68.4 % Best value |
| Body Materials | Glass, Plastic, Aluminium Alloy | — |
| Resistance Features | IP68, MIL-STD-810G, Drop Resistant Up to 1.8 m | — |
| Waterproof Depth | 3 m | — |
| Unfolded thickness | — | 8.6 mm |
Battery
| Specification | S61 | K8 |
|---|---|---|
| Battery Capacity | 4,500 mAh Best value | 4,000 mAh |
| Battery Type | Li-Ion | Li-Po |
| Fast Charge Power | 18 W | — |
| Battery Features | Fast Charging, Battery Level Indicator, Rechargeable, USB Power Delivery | Battery Level Indicator, Fast Charging, Rechargeable, Non-Removable |
| Talk time | 35 h Best value | 32 h |
| Standby time | 888 h Best value | 456 h |
Display
| Specification | S61 | K8 |
|---|---|---|
| Display Aspect Ratio | 16:9 | 16:9 |
| Display Technology | IPS LCD | IPS LCD |
| Display Diagonal | 5.2″ | 5.2″ |
| Display Horizontal Resolution | 1,080 px Best value | 720 px |
| Display Vertical Resolution | 1,920 px Best value | 1,280 px |
| Display Pixel Density | 424 ppi Best value | 282 ppi |
| Display Features | Gorilla Glass 5, Capacitive Touch | IPS LCD, Touchscreen |
Sensors
| Specification | S61 | K8 |
|---|---|---|
| Fingerprint Sensor Placement | — | Rear |
Sensor
| Specification | S61 | K8 |
|---|---|---|
| Sensor Features | Accelerometer, Gyroscope, Proximity Sensor, Compass, Barometer | Fingerprint Sensor, Accelerometer, Gyroscope, Proximity Sensor, Compass, Barometer |
Software
| Specification | S61 | K8 |
|---|---|---|
| Operating System | Android 8 | Android 7 |
| OS Family | Android | Android |
| OS Version | 8 Best value | 7 |
Connectivity
| Specification | S61 | K8 |
|---|---|---|
| SIM Configurations | Single Nano-SIM, Dual Nano-SIM | Dual Nano-SIM |
| Cellular Bands | 2G GSM 850, 2G GSM 900, 2G GSM 1800, 2G GSM 1900, 3G UMTS B850, 3G UMTS B900, 3G UMTS 1700 AWS, 3G UMTS 1900, 3G UMTS 2100, 4G LTE B1, 4G LTE B2, 4G LTE B3, 4G LTE B5, 4G LTE B7, 4G LTE B8, 4G LTE B19, 4G LTE B20, 4G LTE B26, LTE B28, 4G LTE B38, 4G LTE B39, 4G LTE B40, 4G LTE B41 | 2G GSM 850, 2G GSM 900, 2G GSM 1800, 2G GSM 1900, 3G UMTS B850, 3G UMTS B900, 3G UMTS 2100, 4G LTE B1, 4G LTE B3, 4G LTE B5, 4G LTE B7, 4G LTE B8, 4G LTE B40 |
| Cellular Technologies | GSM, HSPA, LTE, 4G | GSM, HSPA, LTE, 4G |
| Wi-Fi Standards | Wi-Fi 802.11a/b/g/n/ac, Wi-Fi 4 (802.11n) | Wi-Fi 802.11 b/g/n, Wi-Fi 4 (802.11n), Wi-Fi 5 (802.11ac) |
| Wi-Fi Features | Dual Band, Wi-Fi Direct | Wi-Fi Direct |
| Bluetooth Version | Bluetooth 5.0 Best value | Bluetooth 4.2 |
| Bluetooth Profiles | A2DP, LE | A2DP, LE |
| Navigation Systems | GPS, GLONASS, Galileo, QZSS Best value | GPS |
| Connectivity Features | 3.5 mm Audio Jack, NFC, FM Radio, USB Type-C, USB OTG, Infrared | 3.5 mm Audio Jack, FM Radio, microUSB, USB Charging |
| USB Version | USB 2.0 | microUSB |
| Max. download speed | 600 Mbps Best value | 150 Mbps |
| Max. upload speed | 150 Mbps Best value | 50 Mbps |
Audio
| Specification | S61 | K8 |
|---|---|---|
| Microphone Count | 2 Best value | 1 |
| Audio Features | Loudspeaker | A2DP, LE, Loudspeaker, Stereo Speakers Best value |
Technical
| Specification | S61 | K8 |
|---|---|---|
| Model numbers | — | K8 |
Features
| Specification | S61 | K8 |
|---|---|---|
| Built-in functions | Document viewer | — |
