Screen size
Yuva StarWinner: 6.8"+16%
Z91 (2GB)5.7"
Quick verdict
Yuva Star leads the measured specs 8-4.
Measured wins
Yuva Star
8
spec wins
Overall winner
Ties
6
equal specs
Z91 (2GB)
4
spec wins
Screen size
Technology
Yuva Star
GSM / HSPA / LTE
Z91 (2GB)
GSM / HSPA / LTE
2G bands
Yuva Star
GSM 900 / 1800
Z91 (2GB)
GSM 900 / 1800
3G bands
Yuva Star
HSDPA 850 / 900 / 1900 / 2100
Z91 (2GB)
HSDPA 900 / 2100
4G bands
Yuva Star
1, 3, 5, 7, 8, 20, 28, 38, 40, 41
Resolution
Refresh rate
Peak brightness
Pixel density
CPU speed
RAM
Storage
Main camera
equal specsFront camera
Battery
Wired charging
Weight
Thickness
IP rating
Wi‑Fi
Bluetooth
USB
equal specs5G support
equal specsNFC
equal specs3.5mm jack
equal specsSD card
equal specsStereo speakers
Z91 (2GB)
1, 3, 5, 40, 41
Speed
Yuva Star
HSPA, LTE
Z91 (2GB)
HSPA 42.2/5.76 Mbps, LTE Cat4 150/50 Mbps
Announced
Yuva Star
2024, August 06
Z91 (2GB)
2018, July. Released 2018, July
Status
Yuva Star
Available. Released 2024, September
Z91 (2GB)
Discontinued
Dimensions
Yuva Star
165 x 76.1 x 8.8 mm (6.50 x 3.00 x 0.35 in)
Z91 (2GB)
152 x 72.9 x 7.7 mm (5.98 x 2.87 x 0.30 in)
Weight
Yuva Star
193 g (6.81 oz)
Z91 (2GB)
147 g (5.19 oz)
SIM
Yuva Star
Nano-SIM + Nano-SIM
Z91 (2GB)
Nano-SIM + Nano-SIM
Type
Yuva Star
IPS LCD
Z91 (2GB)
IPS LCD
Size
Yuva Star
6.75 inches, 110.0 cm2 (~87.6% screen-to-body ratio)
Z91 (2GB)
5.7 inches, 83.8 cm2 (~75.7% screen-to-body ratio)
Resolution
Yuva Star
720 x 1600 pixels, 20:9 ratio (~260 ppi density)
Z91 (2GB)
720 x 1440 pixels, 18:9 ratio (~282 ppi density)
OS
Yuva Star
Android 14 (Go edition)
Z91 (2GB)
Android 7.1 (Nougat)
Chipset
Yuva Star
Unisoc SC9863A (28 nm)
Z91 (2GB)
Mediatek MT6739 (28 nm)
CPU
Yuva Star
Octa-core (4x1.6 GHz Cortex-A55 & 4x1.2 GHz Cortex-A55)
Z91 (2GB)
Quad-core 1.3 GHz Cortex-A53
GPU
Yuva Star
IMG8322
Z91 (2GB)
PowerVR GE8100
Card slot
Yuva Star
microSDXC (dedicated slot)
Z91 (2GB)
microSDXC (dedicated slot)
Internal
Yuva Star
64GB 3GB RAM, 64GB 4GB RAM
Z91 (2GB)
16GB 2GB RAM
Other
Yuva Star
-
Z91 (2GB)
eMMC 5.1
Dual
Yuva Star
13 MP, (wide), AF auxiliary lens
Z91 (2GB)
-
Features
Yuva Star
LED flash, HDR, panorama
Z91 (2GB)
LED flash
Video
Yuva Star
1080p@30fps
Z91 (2GB)
1080p@30fps
Single
Yuva Star
-
Z91 (2GB)
13 MP, f/2.0, 1/3.1", 1.12µm, AF
Single
Yuva Star
5 MP
Z91 (2GB)
8 MP, f/2.2
Video
Yuva Star
Yes
Z91 (2GB)
Features
Yuva Star
-
Z91 (2GB)
LED flash
Loudspeaker
Yuva Star
Yes
Z91 (2GB)
Yes
3.5mm jack
Yuva Star
Yes
Z91 (2GB)
Yes
WLAN
Yuva Star
Wi-Fi 802.11 b/g/n/ac
Z91 (2GB)
Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct
Bluetooth
Yuva Star
4.2, A2DP
Z91 (2GB)
4.0, A2DP
Positioning
Yuva Star
GPS, GLONASS
Z91 (2GB)
GPS
NFC
Yuva Star
No
Z91 (2GB)
No
Infrared port
Yuva Star
Yes
Z91 (2GB)
-
Radio
Yuva Star
FM radio
Z91 (2GB)
FM radio
USB
Yuva Star
USB Type-C 2.0, OTG
Z91 (2GB)
microUSB 2.0, OTG
Sensors
Yuva Star
Fingerprint (side-mounted), accelerometer, proximity
Z91 (2GB)
Fingerprint (rear-mounted), accelerometer, proximity
Type
Yuva Star
Li-Ion 5000 mAh
Z91 (2GB)
Li-Po 3000 mAh, non-removable
Charging
Yuva Star
10W wired
Z91 (2GB)
-
Colors
Yuva Star
Glossy Black, Glossy Lavender, Glossy White
Z91 (2GB)
Blue
Models
Yuva Star
LZG409
Z91 (2GB)
-
Price
Yuva Star
About 70 EUR
Z91 (2GB)
About 9000 INR