Energizer Energy E551S vs Yezz Billy 4: specs comparison

Key differences

Calculated from recorded specifications using minimum difference thresholds. These are differences, not an overall ranking. For three phones, numeric highlights compare the two extremes.

Screen diagonal

Billy 4: 1.5 in smaller diagonal

Energy E551S:

5.5 in

Billy 4:

4 in
Chipset

Energy E551S:

Mediatek MT6737M (28 nm)

Billy 4:

Qualcomm MSM8212 Snapdragon 200 (28 nm)
Release year

Energy E551S:

2019

Billy 4:

2014

Physical size

Relative size, not calibrated actual size. Front and side outlines share one scale and a bottom baseline. Generic outlines use recorded body dimensions, excluding camera bumps.

1. Energy E551S

Height:

Unknown
Width:

Unknown
Depth:

Unknown

Weight:

Unknown

Unavailable dimensions are omitted from the drawing.
2. Billy 4

Height:

122.5 mm
Width:

64.4 mm
Depth:

9.9 mm

Weight:

109 g

Screen size

Approximate rectangular screens calculated from recorded diagonal and aspect ratio at one relative scale. Rounded corners and cutouts are not subtracted. These are not phone outlines or calibrated actual sizes.

1. Energy E551S

Screen diagonal:

5.5 in

Aspect ratio (height:width):

16:9

Approximate rectangular screen area:

83.4 cm²
2. Billy 4

Screen diagonal:

4 in

Aspect ratio (height:width):

5:3

Approximate rectangular screen area:

45.5 cm²

Energy E551S has approximately 83.1% more rectangular screen area than Billy 4.

Memory variants

Each row compares the same storage capacity. Cells show recorded RAM alternatives, not combined maxima. Not recorded does not mean unavailable in every market.

Recorded RAM for Energy E551S, Billy 4, compared at the same storage capacity.
Storage	Energy E551S	Billy 4
8 GB	1 GB RAM	Unknown

Billy 4: Original memory entry

4 GB · 512 MB RAM

Practical features

Explicit Yes and No values are shown directly. Qualified or regional records retain their details. Unknown means the record is missing.

1. Energy E551S

NFC:: Unknown
Headphone jack:: Yes
Memory card support:: See details microSD · up to 64 GB (uses SIM 2 slot)

2. Billy 4

NFC:: Unknown
Headphone jack:: Yes
Memory card support:: See details microSD · up to 256 GB

Battery capacity

Capacity is not battery life. No endurance test is implied.

Recorded battery capacity

Bars start at zero and share a scale within this chart.

1. Energy E551S

2500 mAh

+1200 mAh versus Billy 4
2. Billy 4

1300 mAh

Specifications

Open a section for more detail. On narrow screens, swipe sideways or use Left/Right arrow keys while the table is focused. Unknown means missing data, not No. Recorded zero values are shown as recorded.

1. Energy E551S2. Billy 4

Everyday essentials

Everyday essentials — specifications for Energy E551S, Billy 4.
Specification	Energy E551S	Billy 4
Dimensions (HxWxD)	Х Х mm	122.5 Х 64.4 Х 9.9 mm
Weight	0 g	109 g
Technology	TFT	TFT
Screen size	5.5" inch	4" inch
Screen resolution	480 x 854 px	480 x 800 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.	8 GB 1 GB RAM	4 GB 512 MB RAM
Memory card support	microSD up to 64 GB (uses SIM 2 slot)	microSD up to 256 GB
Battery Capacity is not battery life. No endurance test is implied.	2500 mAh Li-Ion	1300 mAh Removable Li-Ion
Operating system OS	Android 8.0 Oreo (Go edition)	Microsoft Windows Phone 8.1
Chipset	Mediatek MT6737M (28 nm)	Qualcomm MSM8212 Snapdragon 200 (28 nm)
Headphone jack	Yes	Yes

Display

Display — specifications for Energy E551S, Billy 4.
Specification	Energy E551S	Billy 4
Touchscreen	capacitive touchscreen	capacitive touchscreen
Display colors	16M	16M
Screen area	83.4 cm2	45.5 cm2
Screen format	16:9 (height:width)	5:3 (height:width)
Screen to body ratio	Unknown	57.7%
PPI /points per inch/	178 PPI	233 PPI

Camera and Video

Camera and Video — specifications for Energy E551S, Billy 4.
Specification	Energy E551S	Billy 4
Rear camera, main	8 MP Single	8 MP Single
Camera specs	8 MP	8 MP AF
Functions	LED flash	LED flash
Video	720p@30fps	720p@30fps
Front camera, selfie	5 MP Single	1.3 MP Single
Specifications	5 MP	1.3 MP

Performance

Scores marked * are historical catalogue entries. Test conditions are unspecified; no new testing is implied.

Performance — specifications for Energy E551S, Billy 4.
Specification	Energy E551S	Billy 4
Processor CPU	Quad-core 1.3 GHz Cortex-A53	Quad-core 1.2 GHz Cortex-A7
Graphics processor GPU	Mali-T720MP2	Adreno 302
Antutu 7 score *	300123	Unknown

General specs

General specs — specifications for Energy E551S, Billy 4.
Specification	Energy E551S	Billy 4
Release date	2019 February	2014 June
Colors	Black	White Black Red Gun Metal Blue Yellow Champing Gold
Battery life	Unknown	Stand by time- Up to 350 h (2G) / Up to 300 h (3G) Talking time- Up to 7 h (2G) / Up to 4 h 30 min (3G)

Communication and Connectivity

Communication and Connectivity — specifications for Energy E551S, Billy 4.
Specification	Energy E551S	Billy 4
SIM card	Hybrid Dual SIM (Micro-SIM/Nano-SIM dual stand-by)	Dual SIM (Micro-SIM)
Network	Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 -3G - HSDPA 900 / 2100 -4G - LTE band 1(2100) 3(1800) 7(2600) 8(900) 20(800) 28(700)	Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
Speed	HSPA 42.2/11.5 Mbps LTE Cat4 150/50 Mbps	HSPA 42.2/5.76 Mbps
GPRS	Yes	Class 12
Edge	Yes	Class 12
Wi-Fi	Wi-Fi 802.11 b/g/n hotspot	Wi-Fi 802.11 a/b/g/n dual-band hotspot
GPS	Yes with A-GPS	Yes with A-GPS GLONASS
USB	microUSB 2.0	microUSB 2.0
Bluetooth	4.0 A2DP LE	4.0 A2DP

Music and Audio

Music and Audio — specifications for Energy E551S, Billy 4.
Specification	Energy E551S	Billy 4
Radio	FM radio	Stereo FM radio

Other features

Other features — specifications for Energy E551S, Billy 4.
Specification	Energy E551S	Billy 4
Dop	Sensors Accelerometer	Sensors Accelerometer proximity

Energizer Energy E551S vs Yezz Billy 4