Screen size
U Feel Prime5.0"
Y51Winner: 5.5"+8.3%
Quick verdict
U Feel Prime leads the measured specs 10-2.
Measured wins
U Feel Prime
10
spec wins
Overall winner
Ties
5
equal specs
Y51
2
spec wins
Screen size
Technology
U Feel Prime
GSM / HSPA / LTE
Y51
GSM / HSPA
2G bands
U Feel Prime
GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
Y51
GSM 850 / 900 / 1800 / 1900
3G bands
U Feel Prime
HSDPA 900 / 1900 / 2100
Y51
HSDPA 850 / 900 / 1900 / 2100
4G bands
U Feel Prime
LTE 800 / 1800 / 2100 / 2600
Resolution
Refresh rate
Peak brightness
Pixel density
CPU speed
RAM
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
U Feel Prime
HSPA 42.2/5.76 Mbps, LTE Cat4 150/50 Mbps
Y51
HSPA 42.2/5.76 Mbps
Announced
U Feel Prime
2016, September. Released 2016, September
Y51
2021, January 14
Status
U Feel Prime
Discontinued
Y51
Available. Released 2021, January 14
Dimensions
U Feel Prime
142.5 x 69.9 x 8.7 mm (5.61 x 2.75 x 0.34 in)
Y51
146.6 x 72.3 x 9 mm (5.77 x 2.85 x 0.35 in)
Weight
U Feel Prime
150 g (5.29 oz)
Y51
175 g (6.17 oz)
SIM
U Feel Prime
Nano-SIM + Nano-SIM
Y51
Nano-SIM + Micro-SIM
Type
U Feel Prime
IPS LCD
Y51
TN LCD
Size
U Feel Prime
5.0 inches, 68.9 cm2 (~69.2% screen-to-body ratio)
Y51
5.45 inches, 76.7 cm2 (~72.3% screen-to-body ratio)
Resolution
U Feel Prime
1080 x 1920 pixels, 16:9 ratio (~441 ppi density)
Y51
480 x 960 pixels, 18:9 ratio (~197 ppi density)
OS
U Feel Prime
Android 6.0.1 (Marshmallow)
Y51
Android 10 (Go edition)
Chipset
U Feel Prime
Qualcomm MSM8937 Snapdragon 430 (28 nm)
Y51
-
CPU
U Feel Prime
Octa-core 1.4 GHz Cortex-A53
Y51
Quad-core 1.3 GHz Cortex-A7
GPU
U Feel Prime
Adreno 505
Y51
Mali-T820 MP1
Card slot
U Feel Prime
microSDXC (uses shared SIM slot)
Y51
microSDXC
Internal
U Feel Prime
32GB 4GB RAM
Y51
8GB 1GB RAM, 16GB 1GB RAM
Other
U Feel Prime
eMMC 5.1
Y51
-
Single
U Feel Prime
13 MP, 1/3.1", 1.12µm, PDAF
Y51
5 MP
Features
U Feel Prime
Dual-LED flash, panorama, HDR
Y51
LED flash, HDR
Video
U Feel Prime
1080p@30fps
Y51
720p@30fps
Single
U Feel Prime
8 MP
Y51
5 MP
Features
U Feel Prime
LED flash
Y51
-
Video
U Feel Prime
Y51
Loudspeaker
U Feel Prime
Yes
Y51
Yes
3.5mm jack
U Feel Prime
Yes
Y51
Yes
WLAN
U Feel Prime
Wi-Fi 802.11 b/g/n, Wi-Fi Direct
Y51
Wi-Fi 802.11 b/g/n
Bluetooth
U Feel Prime
4.1, A2DP, LE
Y51
4.2, A2DP
Positioning
U Feel Prime
GPS
Y51
GPS
NFC
U Feel Prime
No
Y51
No
Radio
U Feel Prime
Stereo FM radio
Y51
FM Radio
USB
U Feel Prime
microUSB 2.0, OTG
Y51
microUSB 2.0
Sensors
U Feel Prime
Fingerprint (front-mounted), accelerometer, gyro, proximity, compass
Y51
Accelerometer, proximity
Type
U Feel Prime
Li-Po 3000 mAh, non-removable
Y51
Li-Ion 2500 mAh, removable
Stand-by
U Feel Prime
Up to 450 h (3G)
Y51
-
Talk time
U Feel Prime
Up to 21 h (3G)
Y51
-
Colors
U Feel Prime
Silver, Anthracite, Gold
Y51
Deep Grey, Gold, Mint
SAR EU
U Feel Prime
0.99 W/kg (head) 0.80 W/kg (body)
Y51
-
Models
U Feel Prime
-
Y51
W-K211-TH
SAR
U Feel Prime
-
Y51
0.70 W/kg (head) 1.55 W/kg (body)
Price
U Feel Prime
-
Y51
About 70 EUR