The verdict
Your pick: vivo S9, ahead on Design & display, Performance & hardware, Camera and Connectivity. Unless Battery & charging decides it for you.
| Category | S91 | S9 |
|---|---|---|
| Design & display | 4.5 | 7.6 |
| Performance & hardware | 3.0 | 6.0 |
| Camera | 2.0 | 6.9 |
| Connectivity | 4.6 | 6.5 |
| Battery & charging | 5.7 | 4.8 |
Which one is for you?
BLU S91, if you care about…
- Battery Capacity
- 5,000 mAh
- against 4,000 mAh
- Expandable Storage
- Yes
- against No
vivo S9, if you care about…
- RAM Capacity
- 12 GB
- against 4 GB
- Storage Type
- UFS 3.1
- against eMMC 5.1
- Display Technology
- AMOLED
- against IPS LCD
- Bluetooth Version
- Bluetooth 5.2
- against Bluetooth 5.0
Specification comparison
Performance
| Specification | S91 | S9 |
|---|---|---|
| Processor Model | MediaTek Helio G25 | MediaTek Dimensity 1100 |
| Processor Process Size | 12 nm | 6 nm Best value |
| Graphics GPU | PowerVR GE8320 | Mali-G77 MC9 |
| Storage Type | eMMC 5.1 | UFS 3.1 Best value |
| Maximum CPU Clock | 2 GHz | 2.6 GHz Best value |
| Maximum Storage Capacity | 128 GB | 256 GB Best value |
| AnTuTu Score | 127,700 | 733,600 |
| Geekbench 6 Single-Core | 185 | — |
| Geekbench 6 Multi-Core | 521 | — |
| CPU Description | Octa-core CPU with 4 Cortex-A53 cores at 2.0 GHz and 4 Cortex-A53 cores at 1.5 GHz | Octa-core CPU with four Cortex-A78 cores at 2.6 GHz and four Cortex-A55 cores at 2.0 GHz. |
| Processor Type | Octa-Core | Octa-Core |
| 64-Bit Processor | Yes | Yes |
| RAM Capacity | 4 GB | 12 GB Best value |
| RAM Type | DDR4 | LPDDR4X |
| Expandable Storage | Yes Best value | No |
| AnTuTu version | — | v10 |
Design
| Specification | S91 | S9 |
|---|---|---|
| Body Colors | Black, Green | Black, White, Blue, Turquoise |
| Body Thickness | 8.9 mm | 7.4 mm Best value |
| Body Width | 76.3 mm | 73.9 mm |
| Body Height | 164.8 mm | 158.4 mm |
| Weight | 202 g | 173 g Best value |
| Usable Surface | 81.1 % | 85.5 % Best value |
| Body Materials | — | Glass, Aluminium Alloy |
Battery
| Specification | S91 | S9 |
|---|---|---|
| Battery Capacity | 5,000 mAh Best value | 4,000 mAh |
| Battery Type | Li-Polymer | Lithium |
| Fast Charge Power | — | 33 W |
| Battery Features | Battery Level Indicator, Rechargeable | Fast Charging, Non-Removable, Reverse Charging, Rechargeable, Battery Level Indicator |
Display
| Specification | S91 | S9 |
|---|---|---|
| Display Aspect Ratio | 20:9 | 20:9 |
| Display Technology | IPS LCD | AMOLED Best value |
| Display Diagonal | 6.5″ Best value | 6.44″ |
| Display Horizontal Resolution | 720 px | 1,080 px Best value |
| Display Vertical Resolution | 1,600 px | 2,400 px Best value |
| Display Pixel Density | 270 ppi | 409 ppi Best value |
| Display Refresh Rate | — | 90 Hz |
| Display Contrast Ratio | — | 3,000,000 :1 |
| Display Features | IPS LCD, Touchscreen | HDR10+, Curved Glass, Capacitive Touch, Multi-Touch, Scratch Resistant, Frameless, TÜV Rheinland Eye Comfort Certification |
Sensors
| Specification | S91 | S9 |
|---|---|---|
| Fingerprint Sensor Placement | Rear | Under Display |
Sensor
| Specification | S91 | S9 |
|---|---|---|
| Sensor Features | Fingerprint Sensor, Accelerometer, Gyroscope, Compass, Proximity Sensor | Fingerprint Sensor, Accelerometer, Compass, Gravity Sensor, Gyroscope, Light Sensor, Proximity Sensor |
Software
| Specification | S91 | S9 |
|---|---|---|
| Operating System | Android 11 | Android 11 |
| OS Family | Android | Android |
| OS Version | 11 | 11 |
Connectivity
| Specification | S91 | S9 |
|---|---|---|
| SIM Configurations | Dual Nano-SIM | Dual Nano-SIM, Dual SIM Dual Standby, Dual 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 B4, 4G LTE B5, 4G LTE B7, 4G LTE B12, 4G LTE B13, 4G LTE B17, LTE B28, 4G LTE B66 | 2G GSM 850, 2G GSM 900, 2G GSM 1800, 2G GSM 1900, 2G CDMA BC0, 2G CDMA B2, 2G CDMA B3, 2G CDMA B5, 2G CDMA B8, 3G UMTS B1, 3G UMTS B2, 3G UMTS B3, 3G UMTS B4, 3G UMTS B5, 3G UMTS B8, 3G UMTS 1700 AWS, 4G LTE B1, 4G LTE B3, 4G LTE B4, 4G LTE B5, 4G LTE B8, 4G LTE B28A, 4G LTE B34, 4G LTE B38, 4G LTE B39, 4G LTE B40, 4G LTE B41, 5G NR n1, 5G NR n3, 5G NR n28a, 5G NR n41, 5G NR n77, 5G NR n78 |
| Cellular Technologies | GSM, HSPA, UMTS, LTE, 4G | GSM, CDMA, HSPA, UMTS, CDMA2000, LTE, 5G Best value |
| Wi-Fi Standards | Wi-Fi 802.11a/b/g/n, Wi-Fi 4 (802.11n), Wi-Fi 5 (802.11ac) | Wi-Fi 802.11a/b/g/n/ac, Wi-Fi 4 (802.11n), Wi-Fi 5 (802.11ac) |
| Wi-Fi Features | Wi-Fi Direct, Wi-Fi 802.11a/b/g/n | Dual Band, Wi-Fi Hotspot, Wi-Fi Direct, Wi-Fi Display |
| Bluetooth Version | Bluetooth 5.0 | Bluetooth 5.2 Best value |
| Bluetooth Profiles | A2DP, LE | A2DP, LE, aptX HD |
| Navigation Systems | GPS, Galileo | GPS, A-GPS, GLONASS, BeiDou, Galileo Best value |
| Connectivity Features | 3.5 mm Audio Jack, FM Radio, USB Type-C, USB OTG | NFC, USB Type-C, USB OTG, USB Charging, USB Mass Storage, Computer Sync, Tethering, VoLTE |
| USB Version | USB 2.0 | USB Type-C |
| Max. download speed | 150 Mbps | 4,700 Mbps Best value |
| Max. upload speed | 50 Mbps | 2,500 Mbps Best value |
Audio
| Specification | S91 | S9 |
|---|---|---|
| Microphone Count | — | 2 |
| Audio Features | Loudspeaker | A2DP, LE, aptX HD, Hi-Res Audio, Loudspeaker, Two Microphones |
Technical
| Specification | S91 | S9 |
|---|---|---|
| Model numbers | — | V2072A |
