Screen size
Ultra Max LTE L550Winner: 5.5"+9.1%
Volt LTE L5405.0"
Quick verdict
Volt LTE L540 leads the measured specs 6-4.
Measured wins
Ultra Max LTE L550
4
spec wins
Ties
8
equal specs
Volt LTE L540
6
spec wins
Overall winner
Screen size
Technology
Ultra Max LTE L550
GSM / HSPA / LTE
Volt LTE L540
GSM / HSPA / LTE
2G bands
Ultra Max LTE L550
GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
Volt LTE L540
GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
3G bands
Ultra Max LTE L550
HSDPA 850 / 1900 / 2100
Volt LTE L540
HSDPA 850 / 1900 / 2100
4G bands
Ultra Max LTE L550
2, 3, 4, 7, 17, 12, 20
Resolution
equal specsRefresh rate
Peak brightness
Pixel density
CPU speed
RAM
Storage
equal specsMain 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
Volt LTE L540
2, 3, 4, 7, 17
Speed
Ultra Max LTE L550
HSPA 42.2/5.76 Mbps, LTE Cat4 150/50 Mbps
Volt LTE L540
HSPA 21.1/5.76 Mbps, LTE Cat4 150/50 Mbps
Announced
Ultra Max LTE L550
2016, August. Released 2016, December
Volt LTE L540
2016, March. Released 2016, May
Status
Ultra Max LTE L550
Discontinued
Volt LTE L540
Discontinued
Dimensions
Ultra Max LTE L550
152.1 x 76.8 x 7.3 mm (5.99 x 3.02 x 0.29 in)
Volt LTE L540
143.8 x 72 x 10 mm (5.66 x 2.83 x 0.39 in)
Weight
Ultra Max LTE L550
177 g (6.24 oz)
Volt LTE L540
167.5 g (5.93 oz)
SIM
Ultra Max LTE L550
Dual SIM
Volt LTE L540
Dual SIM (Micro-SIM, dual stand-by)
Type
Ultra Max LTE L550
IPS LCD
Volt LTE L540
IPS LCD
Size
Ultra Max LTE L550
5.5 inches, 83.4 cm2 (~71.4% screen-to-body ratio)
Volt LTE L540
5.0 inches, 68.9 cm2 (~66.6% screen-to-body ratio)
Resolution
Ultra Max LTE L550
720 x 1280 pixels, 16:9 ratio (~267 ppi density)
Volt LTE L540
720 x 1280 pixels, 16:9 ratio (~294 ppi density)
OS
Ultra Max LTE L550
Android 6.0 (Marshmallow)
Volt LTE L540
Android 5.1 (Lollipop)
Chipset
Ultra Max LTE L550
Mediatek MT6737 (28 nm)
Volt LTE L540
Mediatek MT6735P (28 nm)
CPU
Ultra Max LTE L550
Quad-core 1.25 GHz Cortex-A53
Volt LTE L540
Quad-core 1.0 GHz Cortex-A53
GPU
Ultra Max LTE L550
Mali-T720
Volt LTE L540
Mali-T720MP2
Card slot
Ultra Max LTE L550
microSDXC
Volt LTE L540
microSDXC
Internal
Ultra Max LTE L550
16GB 1GB RAM
Volt LTE L540
16GB 3GB RAM
Other
Ultra Max LTE L550
eMMC 5.0
Volt LTE L540
-
Single
Ultra Max LTE L550
8 MP, AF
Volt LTE L540
8 MP, f/2.4, 1/4.0", 1.12µm, AF
Features
Ultra Max LTE L550
LED flash
Volt LTE L540
LED flash, panorama, HDR
Video
Ultra Max LTE L550
1080p@30fps
Volt LTE L540
1080p@30fps
Single
Ultra Max LTE L550
2 MP
Volt LTE L540
5 MP, f/2.2, 1/5.0", 1.12µm
Video
Ultra Max LTE L550
Volt LTE L540
Loudspeaker
Ultra Max LTE L550
Yes
Volt LTE L540
Yes
3.5mm jack
Ultra Max LTE L550
Yes
Volt LTE L540
Yes
WLAN
Ultra Max LTE L550
Wi-Fi 802.11 b/g/n
Volt LTE L540
Wi-Fi 802.11 b/g/n, Wi-Fi Direct, hotspot
Bluetooth
Ultra Max LTE L550
4.1, A2DP, LE
Volt LTE L540
4.0, A2DP, LE
Positioning
Ultra Max LTE L550
GPS
Volt LTE L540
GPS
NFC
Ultra Max LTE L550
No
Volt LTE L540
No
Radio
Ultra Max LTE L550
FM radio
Volt LTE L540
FM radio
USB
Ultra Max LTE L550
microUSB 2.0
Volt LTE L540
microUSB 2.0
Sensors
Ultra Max LTE L550
Accelerometer, proximity
Volt LTE L540
Accelerometer, proximity
Type
Ultra Max LTE L550
Li-Po 2700 mAh battery
Volt LTE L540
Li-Po 4000 mAh, non-removable
Stand-by
Ultra Max LTE L550
Up to 180 h (3G)
Volt LTE L540
Up to 600 h (2G) / Up to 300 h (3G)
Talk time
Ultra Max LTE L550
Up to 5 h 30 min (3G)
Volt LTE L540
Up to 16 h (2G) / Up to 12 h (3G)
Charging
Ultra Max LTE L550
-
Volt LTE L540
10W wired
Colors
Ultra Max LTE L550
Black, Gold, White
Volt LTE L540
Grey, Gold, Rose Gold