Screen size
Energy E520 LTEWinner: 5.2"+3.8%
U506S5.0"
Quick verdict
Energy E520 LTE leads the measured specs 9-3.
Measured wins
Energy E520 LTE
9
spec wins
Overall winner
Ties
6
equal specs
U506S
3
spec wins
Screen size
Technology
Energy E520 LTE
GSM / HSPA / LTE
U506S
GSM / HSPA / LTE
2G bands
Energy E520 LTE
GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
U506S
GSM 850 / 900 / 1800 / 1900
3G bands
Energy E520 LTE
HSDPA 900 / 2100
U506S
HSDPA 850 / 900 / 2100
4G bands
Energy E520 LTE
1, 3, 7, 8, 20
Resolution
Refresh rate
Peak brightness
Pixel density
CPU speed
RAM
equal specsStorage
Main camera
Front camera
Battery
Wired charging
Weight
Thickness
IP rating
Wi‑Fi
Bluetooth
equal specsUSB
5G support
equal specsNFC
equal specs3.5mm jack
equal specsSD card
equal specsStereo speakers
U506S
1, 3, 4, 7, 8, 20, 28, 38, 40, 41
Speed
Energy E520 LTE
HSPA 42.2/11.5 Mbps, LTE Cat4 150/50 Mbps
U506S
HSPA, LTE
Announced
Energy E520 LTE
2017, September. Released 2017, September
U506S
2023, November
Status
Energy E520 LTE
Discontinued
U506S
Available. Released 2023, November
Dimensions
Energy E520 LTE
150.8 x 76.2 x 11.1 mm (5.94 x 3.00 x 0.44 in)
U506S
144.8 x 72.4 x 11.6 mm (5.70 x 2.85 x 0.46 in)
Weight
Energy E520 LTE
206 g (7.27 oz)
U506S
178 g (6.28 oz)
SIM
Energy E520 LTE
Nano-SIM + Nano-SIM
U506S
Nano-SIM + Nano-SIM
Other
Energy E520 LTE
IP68 dust tight and water resistant (immersible up to 1.5m for 30 min) MIL-STD-810G compliant
U506S
-
Type
Energy E520 LTE
IPS LCD
U506S
IPS LCD
Size
Energy E520 LTE
5.2 inches, 74.5 cm2 (~64.9% screen-to-body ratio)
U506S
5.0 inches, 68.9 cm2 (~65.7% screen-to-body ratio)
Resolution
Energy E520 LTE
720 x 1280 pixels, 16:9 ratio (~282 ppi density)
U506S
480 x 854 pixels, 16:9 ratio (~196 ppi density)
Protection
Energy E520 LTE
Corning Gorilla Glass 3
U506S
-
OS
Energy E520 LTE
Android 6.0 (Marshmallow)
U506S
Android 13 (Go edition)
Chipset
Energy E520 LTE
Mediatek MT6737 (28 nm)
U506S
-
CPU
Energy E520 LTE
Quad-core 1.3 GHz Cortex-A53
U506S
Quad-core 1.5 GHz
GPU
Energy E520 LTE
Mali-T720
U506S
-
Card slot
Energy E520 LTE
microSDHC (uses shared SIM slot)
U506S
microSDHC
Internal
Energy E520 LTE
16GB 2GB RAM
U506S
32GB 2GB RAM
Other
Energy E520 LTE
eMMC 5.0
U506S
eMMC 5.1
Single
Energy E520 LTE
13 MP, AF
U506S
-
Features
Energy E520 LTE
LED flash, HDR, panorama
U506S
LED flash
Video
Energy E520 LTE
1080p@30fps
U506S
1080p@30fps
Dual
Energy E520 LTE
-
U506S
5 MP Auxiliary lens
Single
Energy E520 LTE
5 MP
U506S
2 MP
Video
Energy E520 LTE
U506S
1080p@30fps
Loudspeaker
Energy E520 LTE
Yes
U506S
Yes
3.5mm jack
Energy E520 LTE
Yes
U506S
Yes
WLAN
Energy E520 LTE
Wi-Fi 802.11 b/g/n
U506S
Wi-Fi 802.11 a/b/g/n
Bluetooth
Energy E520 LTE
4.0, A2DP, LE
U506S
4.0, A2DP
Positioning
Energy E520 LTE
GPS, GLONASS
U506S
GPS
NFC
Energy E520 LTE
No
U506S
No
Radio
Energy E520 LTE
FM radio
U506S
FM radio
USB
Energy E520 LTE
microUSB 2.0
U506S
microUSB
Sensors
Energy E520 LTE
Fingerprint (rear-mounted), accelerometer, proximity, compass
U506S
Accelerometer, proximity
Type
Energy E520 LTE
Li-Ion 4000 mAh, non-removable
U506S
Li-Ion 3000 mAh battery, removable
Stand-by
Energy E520 LTE
Up to 220 h (3G)
U506S
-
Talk time
Energy E520 LTE
Up to 15 h (3G)
U506S
-
Colors
Energy E520 LTE
Black
U506S
Black
SAR
Energy E520 LTE
0.26 W/kg (head) 0.60 W/kg (body)
U506S
-
Price
Energy E520 LTE
About 330 EUR
U506S
About 60 EUR