Screen size
UpulseWinner: 5.5"+0.9%
Y515.5"
Quick verdict
Upulse leads the measured specs 10-1.
Measured wins
Upulse
10
spec wins
Overall winner
Ties
6
equal specs
Y51
1
spec wins
Screen size
Technology
Upulse
GSM / HSPA / LTE
Y51
GSM / HSPA
2G bands
Upulse
GSM 850 / 900 / 1800 / 1900
Y51
GSM 850 / 900 / 1800 / 1900
3G bands
Upulse
HSDPA 850 / 900 / 1900 / 2100
Y51
HSDPA 850 / 900 / 1900 / 2100
4G bands
Upulse
1, 3, 7, 20
Resolution
Refresh rate
Peak brightness
Pixel density
CPU speed
equal specsRAM
Storage
Main camera
Front 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
Y51
-
Speed
Upulse
HSPA 21.1/5.76 Mbps, LTE Cat4 150/50 Mbps
Y51
HSPA 42.2/5.76 Mbps
Announced
Upulse
2017. Released 2017
Y51
2021, January 14
Status
Upulse
Discontinued
Y51
Available. Released 2021, January 14
Dimensions
Upulse
153.5 x 77.5 x 8.5 mm (6.04 x 3.05 x 0.33 in)
Y51
146.6 x 72.3 x 9 mm (5.77 x 2.85 x 0.35 in)
Weight
Upulse
167 g (5.89 oz)
Y51
175 g (6.17 oz)
SIM
Upulse
Dual SIM (Micro-SIM, dual stand-by)
Y51
Nano-SIM + Micro-SIM
Type
Upulse
IPS LCD
Y51
TN LCD
Size
Upulse
5.5 inches, 83.4 cm2 (~70.1% screen-to-body ratio)
Y51
5.45 inches, 76.7 cm2 (~72.3% screen-to-body ratio)
Resolution
Upulse
720 x 1280 pixels, 16:9 ratio (~267 ppi density)
Y51
480 x 960 pixels, 18:9 ratio (~197 ppi density)
OS
Upulse
Android 7.0 (Nougat)
Y51
Android 10 (Go edition)
CPU
Upulse
Quad-core 1.3 GHz Cortex-A53
Y51
Quad-core 1.3 GHz Cortex-A7
GPU
Upulse
Mali-T720
Y51
Mali-T820 MP1
Card slot
Upulse
microSDXC
Y51
microSDXC
Internal
Upulse
32GB 3GB RAM
Y51
8GB 1GB RAM, 16GB 1GB RAM
Single
Upulse
13 MP, AF
Y51
5 MP
Features
Upulse
LED flash, panorama, HDR
Y51
LED flash, HDR
Video
Upulse
1080p@30fps
Y51
720p@30fps
Single
Upulse
8 MP
Y51
5 MP
Features
Upulse
LED flash
Y51
-
Video
Upulse
Y51
Loudspeaker
Upulse
Yes
Y51
Yes
3.5mm jack
Upulse
Yes
Y51
Yes
WLAN
Upulse
Wi-Fi 802.11 b/g/n
Y51
Wi-Fi 802.11 b/g/n
Bluetooth
Upulse
4.0, A2DP
Y51
4.2, A2DP
Positioning
Upulse
GPS
Y51
GPS
NFC
Upulse
No
Y51
No
Radio
Upulse
FM radio
Y51
FM Radio
USB
Upulse
microUSB 2.0, OTG
Y51
microUSB 2.0
Sensors
Upulse
Fingerprint (rear-mounted), accelerometer, gyro, proximity, compass
Y51
Accelerometer, proximity
Type
Upulse
Li-Po 3000 mAh, non-removable
Y51
Li-Ion 2500 mAh, removable
Colors
Upulse
Black, Gold, Deep Bleen, Cherry Red
Y51
Deep Grey, Gold, Mint
Models
Upulse
U PULSE
Y51
W-K211-TH
SAR
Upulse
-
Y51
0.70 W/kg (head) 1.55 W/kg (body)
Price
Upulse
-
Y51
About 70 EUR