Screen size
Yuva StarWinner: 6.8"+16%
Z915.7"
Quick verdict
Yuva Star leads the measured specs 7-4.
Measured wins
Yuva Star
7
spec wins
Overall winner
Ties
7
equal specs
Z91
4
spec wins
Screen size
Technology
Yuva Star
GSM / HSPA / LTE
Z91
GSM / HSPA / LTE
2G bands
Yuva Star
GSM 900 / 1800
Z91
GSM 900 / 1800
3G bands
Yuva Star
HSDPA 850 / 900 / 1900 / 2100
Z91
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
equal specsStorage
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
1, 3, 5, 40, 41
Speed
Yuva Star
HSPA, LTE
Z91
HSPA 42.2/5.76 Mbps, LTE Cat4 150/50 Mbps
Announced
Yuva Star
2024, August 06
Z91
2018, March. Released 2018, March
Status
Yuva Star
Available. Released 2024, September
Z91
Discontinued
Dimensions
Yuva Star
165 x 76.1 x 8.8 mm (6.50 x 3.00 x 0.35 in)
Z91
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
147 g (5.19 oz)
SIM
Yuva Star
Nano-SIM + Nano-SIM
Z91
Nano-SIM + Nano-SIM
Type
Yuva Star
IPS LCD
Z91
IPS LCD
Size
Yuva Star
6.75 inches, 110.0 cm2 (~87.6% screen-to-body ratio)
Z91
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
720 x 1440 pixels, 18:9 ratio (~282 ppi density)
OS
Yuva Star
Android 14 (Go edition)
Z91
Android 7.1 (Nougat)
Chipset
Yuva Star
Unisoc SC9863A (28 nm)
Z91
Mediatek MT6739 (28 nm)
CPU
Yuva Star
Octa-core (4x1.6 GHz Cortex-A55 & 4x1.2 GHz Cortex-A55)
Z91
Quad-core 1.3 GHz Cortex-A53
GPU
Yuva Star
IMG8322
Z91
PowerVR GE8100
Card slot
Yuva Star
microSDXC (dedicated slot)
Z91
microSDXC (dedicated slot)
Internal
Yuva Star
64GB 3GB RAM, 64GB 4GB RAM
Z91
32GB 3GB RAM
Other
Yuva Star
-
Z91
eMMC 5.1
Dual
Yuva Star
13 MP, (wide), AF auxiliary lens
Z91
-
Features
Yuva Star
LED flash, HDR, panorama
Z91
LED flash
Video
Yuva Star
1080p@30fps
Z91
1080p@30fps
Single
Yuva Star
-
Z91
13 MP, f/2.0, 1/3.1", 1.12µm, AF
Single
Yuva Star
5 MP
Z91
8 MP, f/2.2
Video
Yuva Star
Yes
Z91
Features
Yuva Star
-
Z91
LED flash
Loudspeaker
Yuva Star
Yes
Z91
Yes
3.5mm jack
Yuva Star
Yes
Z91
Yes
WLAN
Yuva Star
Wi-Fi 802.11 b/g/n/ac
Z91
Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct
Bluetooth
Yuva Star
4.2, A2DP
Z91
4.0, A2DP
Positioning
Yuva Star
GPS, GLONASS
Z91
GPS
NFC
Yuva Star
No
Z91
No
Infrared port
Yuva Star
Yes
Z91
-
Radio
Yuva Star
FM radio
Z91
FM radio
USB
Yuva Star
USB Type-C 2.0, OTG
Z91
microUSB 2.0, OTG
Sensors
Yuva Star
Fingerprint (side-mounted), accelerometer, proximity
Z91
Fingerprint (rear-mounted), accelerometer, proximity
Type
Yuva Star
Li-Ion 5000 mAh
Z91
Li-Po 3000 mAh, non-removable
Charging
Yuva Star
10W wired
Z91
-
Colors
Yuva Star
Glossy Black, Glossy Lavender, Glossy White
Z91
Blue
Models
Yuva Star
LZG409
Z91
Z91
Price
Yuva Star
About 70 EUR
Z91
About 10000 INR