The verdict
Neither runs away with it: each wins something.
| Category | Z81 | Z91 |
|---|---|---|
| Design & display | 5.2 | 5.3 |
| Performance & hardware | 2.6 | 1.4 |
| Camera | 3.0 | 3.1 |
| Connectivity | 3.1 | 3.5 |
| Battery & charging | 2.2 | 2.2 |
Which one is for you?
Lava Z81, if you care about…
- RAM Capacity
- 3 GB
- against 2 GB
- Bluetooth Version
- Bluetooth 4.2
- against Bluetooth 4.0
- Maximum Storage Capacity
- 32 GB
- against 16 GB
- Weight
- 141 g
- against 147 g
Lava Z91, if you care about…
- Wi-Fi Standards
- Wi-Fi 802.11a/b/g/n/ac, Wi-Fi 4 (802.11n), Wi-Fi 5 (802.11ac)
- against Wi-Fi 802.11 b/g/n
- Geekbench 6 Single-Core
- 456
- against 332
- Geekbench 6 Multi-Core
- 1,499
- against 1,145
Specification comparison
Performance
| Specification | Z81 | Z91 |
|---|---|---|
| Processor Model | MediaTek Helio A22 | MediaTek MT6739 |
| Processor Process Size | 12 nm Best value | 28 nm |
| Graphics GPU | PowerVR GE8320 | PowerVR GE8100 |
| Storage Type | eMMC 5.1 | eMMC 5.1 |
| Maximum CPU Clock | 2 GHz Best value | 1.3 GHz |
| Maximum Storage Capacity | 32 GB Best value | 16 GB |
| Geekbench 6 Single-Core | 332 | 456 Best value |
| Geekbench 6 Multi-Core | 1,145 | 1,499 Best value |
| CPU Description | Quad-core 2.0 GHz Cortex-A53 | Quad-core 1.3 GHz Cortex-A53 |
| Processor Type | Quad-Core | Quad-Core |
| 64-Bit Processor | Yes | Yes |
| RAM Capacity | 3 GB Best value | 2 GB |
| Expandable Storage | Yes | Yes |
Design
| Specification | Z81 | Z91 |
|---|---|---|
| Body Colors | Black, Blue, Gold | Blue |
| Body Thickness | 7.9 mm | 7.7 mm Best value |
| Body Width | 73 mm | 72.9 mm |
| Body Height | 152.2 mm | 152 mm |
| Weight | 141 g Best value | 147 g |
| Usable Surface | 75.5 % | 75.7 % Best value |
| Unfolded thickness | 7.9 mm | 7.7 mm Best value |
Battery
| Specification | Z81 | Z91 |
|---|---|---|
| Battery Capacity | 3,000 mAh | 3,000 mAh |
| Battery Type | Li-Po | Li-Polymer |
| Fast Charge Power | 10 W | — |
| Battery Features | Battery Level Indicator, Rechargeable | Battery Level Indicator, Rechargeable |
Display
| Specification | Z81 | Z91 |
|---|---|---|
| Display Aspect Ratio | 18:9 | 18:9 |
| Display Technology | IPS LCD | IPS LCD |
| Display Diagonal | 5.7″ | 5.7″ |
| Display Horizontal Resolution | 720 px | 720 px |
| Display Vertical Resolution | 1,440 px | 1,440 px |
| Display Pixel Density | 282 ppi | 282 ppi |
| Display Features | Gorilla Glass 3, Touchscreen | Touchscreen |
Sensors
| Specification | Z81 | Z91 |
|---|---|---|
| Fingerprint Sensor Placement | Rear | Rear |
Sensor
| Specification | Z81 | Z91 |
|---|---|---|
| Sensor Features | Fingerprint Sensor, Accelerometer, Proximity Sensor | Fingerprint Sensor, Accelerometer, Proximity Sensor |
Software
| Specification | Z81 | Z91 |
|---|---|---|
| Operating System | Android 8 | Android 7 |
| OS Family | Android | Android |
| OS Version | 8 Best value | 7 |
Connectivity
| Specification | Z81 | Z91 |
|---|---|---|
| SIM Configurations | Dual Nano-SIM, Dual SIM | Dual Nano-SIM |
| Cellular Bands | 2G GSM 900, 2G GSM 1800, 3G UMTS B900, 3G UMTS 2100, 4G LTE B1, 4G LTE B3, 4G LTE B5, 4G LTE B8, 4G LTE B40, 4G LTE B41 | 2G GSM 900, 2G GSM 1800, 3G UMTS B900, 3G UMTS 2100, 4G LTE B1, 4G LTE B3, 4G LTE B5, 4G LTE B40, 4G LTE B41 |
| Cellular Technologies | GSM, HSPA, LTE, 4G | GSM, HSPA, UMTS, LTE, 4G |
| Wi-Fi Standards | Wi-Fi 802.11 b/g/n | Wi-Fi 802.11a/b/g/n/ac, Wi-Fi 4 (802.11n), Wi-Fi 5 (802.11ac) Best value |
| Wi-Fi Features | Wi-Fi Direct | Dual Band, Wi-Fi Direct |
| Bluetooth Version | Bluetooth 4.2 Best value | Bluetooth 4.0 |
| Bluetooth Profiles | A2DP, LE | A2DP |
| Navigation Systems | GPS | GPS |
| Connectivity Features | 3.5 mm Audio Jack, FM Radio, microUSB, USB 2.0 | 3.5 mm Audio Jack, FM Radio, microUSB, USB OTG |
| USB Version | USB 2.0 | microUSB |
| Max. download speed | 150 Mbps | 150 Mbps |
| Max. upload speed | 50 Mbps | 50 Mbps |
Audio
| Specification | Z81 | Z91 |
|---|---|---|
| Microphone Count | 1 | 1 |
| Audio Features | A2DP, LE, Loudspeaker | A2DP, Loudspeaker |
Technical
| Specification | Z81 | Z91 |
|---|---|---|
| Model numbers | Z81 | — |
