| General Specifications | Launch Date | April 12, 2018 |
| Brand | Lava | |
| Model | Z91 | |
| Color | Blue | |
| Form Factor | Touchbar | |
| Category | Phablet | |
| Dual SIM | ||
| Hybrid SIM | ||
| SIM Card | Dual Nano SIM | |
| Waterproof | ||
| Facial Recognition | ||
| Fingerprint Scanner | Rear |
|
| Network | LTE+LTE | |
| Operating System | Android v7.0 (Nougat) | |
| Custom UI | Star OS | |
| Dimensions | 152 x 72.9 x 7.7 mm | |
| Weight | 147 grams |
| Processor & RAM | Processor | 1.3 GHz Quad core (Cortex A53) |
| Chipset | MediaTek MT6739 | |
| RAM | 3 GB | |
| GPU | PowerVR GE8100 |
| Display | Size | 5.7 inches (14.48 cm) |
| Screen | IPS LCD, 2.5D Curved Glass | |
| Sensors | Light sensor, Proximity sensor, Accelerometer | |
| Resolution | 720 x 1440 pixels | |
| Pixel Density | 282 ppi | |
| Colours | 16M | |
| Keyboard | Touch | |
| Screen to Body Ratio | 75.67 % | |
| Stylus | ||
| Other Input Features | Multi-touch |
| Camera | Rear Camera | 13 MP |
| Front Camera | 8 MP |
|
| Rear Flash | LED Flash |
|
| Rear Camera Aperture | f/2.0 | |
| Front Camera Aperture | f/2.2 | |
| Rear Camera Features | Geo tagging, High Dynamic Range mode (HDR) | |
| Rear Auto Focus | ||
| Video Recording | 1080p@30fps, Full HD |
|
| Zoom | Digital Zoom |
| Battery | Battery Capacity | 3000 mAh |
| Battery Type | Li-ion, Non Removable | |
| Wireless Charging | ||
| Quick Charging |
| Connectivity | GPRS | |
| 2G | GSM 1800/900 | |
| 3G | HSDPA 2100/900, HSDPA 42.2 Mbps | |
| 4G | LTE Cat4 150 Mbps/LTE Cat4 150 Mbps | |
| VoLTE | ||
| WiFi | Wi-Fi 802.11, b/g/n |
|
| Bluetooth | v4.0 |
|
| GPS | A-GPS |
|
| NFC Support | ||
| USB Port | microUSB 2.0, Mass storage device, USB charging | |
| Edge | ||
| HDMI | ||
| USB OTG | ||
| USB Type-C |
| Entertainment & Multimedia | Ringtone | Vibration |
| Radio | ||
| Headset | ||
| Audio Format | 3GPP, AMR, MIDI, MP3, WAV | |
| Video Format | H.264, MPEG4 | |
| Speaker |
| Storage | Internal Storage | 32 GB |
| Expandable Storage | Up to 128 GB |
|
| Card Slot | microSD |
| Calling & Messaging | Phone Book | Practically Unlimited |
| SMS | ||
| MMS | ||
| Instant Messaging | ||
| Additional Information | Items in the Box | Handset, Battery, Charger, Earphone, USB Cable, Backcover, Screen Guard, User Manual, Warranty Card |
