The verdict
Your pick: vivo U20, ahead on Camera and Battery & charging. Unless Design & display decides it for you.
| Category | S1 | U20 |
|---|---|---|
| Design & display | 7.1 | 5.7 |
| Performance & hardware | 3.4 | 3.4 |
| Camera | 4.4 | 4.8 |
| Connectivity | 4.6 | 4.8 |
| Battery & charging | 4.5 | 5.3 |
Which one is for you?
vivo S1, if you care about…
- Display Technology
- Super AMOLED
- against IPS LCD
- Maximum Storage Capacity
- 256 GB
- against 128 GB
- Weight
- 179 g
- against 193 g
- Body Thickness
- 8.1 mm
- against 8.9 mm
vivo U20, if you care about…
- Battery Capacity
- 5,000 mAh
- against 4,500 mAh
- RAM Capacity
- 8 GB
- against 6 GB
- Storage Type
- UFS 2.1
- against eMMC 5.1
- Geekbench 6 Single-Core
- 652
- against 422
Specification comparison
Performance
| Specification | S1 | U20 |
|---|---|---|
| Processor Model | MediaTek Helio P65 | Qualcomm Snapdragon 675 |
| Processor Process Size | 12 nm | 11 nm Best value |
| Graphics GPU | Mali-G52 MC2 | Qualcomm Adreno 612 |
| Storage Type | eMMC 5.1 | UFS 2.1 Best value |
| Maximum CPU Clock | 2 GHz | 2 GHz |
| Maximum Storage Capacity | 256 GB Best value | 128 GB |
| AnTuTu Score | 138,000 | 215,820 |
| Geekbench 6 Single-Core | 422 | 652 Best value |
| Geekbench 6 Multi-Core | 1,261 | 1,609 Best value |
| CPU Description | Octa-core processor with two 2.0 GHz Cortex-A75 cores and six 1.7 GHz Cortex-A55 cores. | Octa-core CPU with 2 Kryo 460 cores at up to 2.0 GHz and 6 Kryo cores at 1.7–1.8 GHz. |
| Processor Type | Octa-Core | Octa-Core |
| 64-Bit Processor | Yes | Yes |
| RAM Capacity | 6 GB | 8 GB Best value |
| RAM Type | — | DDR4 |
| Expandable Storage | Yes | Yes |
| AnTuTu version | — | v8 |
| Maximum memory card | 256 GB | — |
Design
| Specification | S1 | U20 |
|---|---|---|
| Body Colors | Black, Blue, Green | Black, Blue |
| Body Thickness | 8.1 mm Best value | 8.9 mm |
| Body Width | 75.2 mm | 76.5 mm |
| Body Height | 159.5 mm | 162.2 mm |
| Weight | 179 g Best value | 193 g |
| Usable Surface | 83.3 % | 84.4 % Best value |
| Body Materials | Glass, Plastic | Glass, Plastic |
| Unfolded thickness | 8.1 mm | — |
Battery
| Specification | S1 | U20 |
|---|---|---|
| Battery Capacity | 4,500 mAh | 5,000 mAh Best value |
| Battery Type | — | Li-Polymer |
| Fast Charge Power | 18 W | 18 W |
| Battery Features | Non-Removable, Fast Charging, Battery Level Indicator, Rechargeable | Non-Removable, Fast Charging, Rechargeable, Battery Level Indicator |
Display
| Specification | S1 | U20 |
|---|---|---|
| Display Aspect Ratio | 19.5:9 | 19.5:9 |
| Display Technology | Super AMOLED Best value | IPS LCD |
| Display Diagonal | 6.38″ | 6.53″ Best value |
| Display Horizontal Resolution | 1,080 px | 1,080 px |
| Display Vertical Resolution | 2,340 px | 2,340 px |
| Display Pixel Density | 404 ppi Best value | 395 ppi |
| Display Features | Always-On Display, Capacitive Touch | Water Drop Notch, Scratch Resistant, Capacitive Touch, Multi-Touch, Frameless |
Sensors
| Specification | S1 | U20 |
|---|---|---|
| Fingerprint Sensor Placement | Under Display | Rear |
Sensor
| Specification | S1 | U20 |
|---|---|---|
| Sensor Features | Fingerprint Sensor, Accelerometer, Proximity Sensor, Compass, Gyroscope | Fingerprint Sensor, Accelerometer, Proximity Sensor, Compass, Gyroscope, Light Sensor |
Software
| Specification | S1 | U20 |
|---|---|---|
| Operating System | Android 9 | Android 9 |
| OS Family | Android | Android |
| OS Version | 9 | 9 |
| Google Services | — | Yes |
| Widevine L1 | — | Yes |
Connectivity
| Specification | S1 | U20 |
|---|---|---|
| SIM Configurations | Dual Nano-SIM | Dual Nano-SIM, Dual SIM Dual Standby |
| Cellular Bands | 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 B20, 4G LTE B38, 4G LTE B40, 4G LTE B41 | 2G GSM 850, 2G GSM 900, 2G GSM 1800, 2G GSM 1900, 3G UMTS B1, 3G UMTS B5, 3G UMTS B8, 4G LTE B1, 4G LTE B3, 4G LTE B5, 4G LTE B8, 4G LTE B38, 4G LTE B40, 4G LTE B41 |
| 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 5 (802.11ac) | Wi-Fi 4 (802.11n), Wi-Fi 5 (802.11ac) |
| Wi-Fi Features | Dual Band, Wi-Fi Direct | Dual Band, Wi-Fi Hotspot, Wi-Fi Direct, Wi-Fi Display |
| Bluetooth Version | Bluetooth 5.0 | Bluetooth 5.0 |
| Bluetooth Profiles | A2DP, LE | A2DP, LE, aptX |
| Navigation Systems | GPS, GLONASS, Galileo, BeiDou | GPS, A-GPS, GLONASS, BeiDou, Galileo Best value |
| Connectivity Features | 3.5 mm Audio Jack, FM Radio, microUSB, USB OTG | 3.5 mm Audio Jack, FM Radio, microUSB, USB Charging, USB Mass Storage, USB OTG, Computer Sync, OTA Sync, Tethering, VoLTE |
| USB Version | microUSB | USB 2.0 |
| Max. download speed | 300 Mbps | 600 Mbps Best value |
| Max. upload speed | 50 Mbps | 100 Mbps Best value |
Audio
| Specification | S1 | U20 |
|---|---|---|
| Microphone Count | 2 | 2 |
| Audio Features | A2DP, LE, Loudspeaker | A2DP, LE, aptX |
Technical
| Specification | S1 | U20 |
|---|---|---|
| Model numbers | 1907, V1907, 1907_19, V1913A | — |
