Detailed comparison and review of ASUS ZenFone 2 (ZE550ML) and ASUS ZenFone 2 (ZE551ML). With our comprehensive overview, you can simply compare sizes, functions, but also other key features of both phones and easily decide which one is the right choice for you. Our goal is to help you identify the main differences between products and find the phone that best fits your needs and expectations.
DESIGN AND DIMENSIONS | ASUS ZenFone 2 (ZE550ML) | ASUS ZenFone 2 (ZE551ML) |
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Product Type | Smartphone | Smartphone | |
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Manufacturer Model Number | ZE550ML | ZE551ML | |
Form Factor | Touch | Touch | |
Height | 152.5 mm | 152.5 mm | Both phones are the same height. |
Width | 77.2 mm | 77.2 mm | Both phones are the same width |
Depth | 10.9 mm | 10.9 mm | Both phones are the same depth. |
Weight | 170 g | 170 g | Both phones are the same weight. |
Body Colour | - | Grey | |
Waterproof (Water-resistant) | - | - | |
SAR Value | - | 0.87 W/kg (body), 0.92 W/kg (head) | |
Connector Type | Headset jack - mini-phone 3.5mm USB |
Headset jack - mini-phone 3.5mm Micro-USB - 5 pin Micro-USB Type B |
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SIM Card Type (Size) | Micro SIM | Micro SIM | |
SIM Card Qty | Dual-SIM | Dual-SIM |
DISPLAY | ASUS ZenFone 2 (ZE550ML) | ASUS ZenFone 2 (ZE551ML) |
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Display Type | LCD display | LCD display | |
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Display Technology | IPS | IPS | |
Screen Size (Display Size) | 5.5" | 5.5" | Both phones have the same screen size. |
Screen Resolution (Display Resolution) | 1280 x 720 pixels | 1920 x 1080 pixels | ASUS ZenFone 2 (ZE551ML) has better screen resolution than ASUS ZenFone 2 (ZE550ML). |
Display Format | HD | Full HD | |
Pixel Density | 267 ppi | 400 ppi | ASUS ZenFone 2 (ZE551ML) has better pixel density than ASUS ZenFone 2 (ZE550ML). |
Display Protection (Screen Protector) | Fingerprint-resistant oleophobic coating, Corning Gorilla Glass 3 (scratch resistant glass) | Fingerprint-resistant oleophobic coating, Corning Gorilla Glass 3 (scratch resistant glass) |
PROCESSOR | ASUS ZenFone 2 (ZE550ML) | ASUS ZenFone 2 (ZE551ML) |
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Processor Type (CPU) | Intel Atom | Intel Atom | |
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Processor Number | Z3560 | Z3560 | |
Clock Speed | 1.8 GHz | 1.83 GHz | ASUS ZenFone 2 (ZE551ML) has higher clock speed than ASUS ZenFone 2 (ZE550ML). |
Processor Core Qty | Quad-core | Quad-core | Both phones have the same number of phone cores. |
64-bit Architecture | - | Yes | ASUS ZenFone 2 (ZE551ML) has 64-bit architecture. |
Graphics System (GPU) | PowerVR G6430 | PowerVR G6430 |
MEMORY | ASUS ZenFone 2 (ZE550ML) | ASUS ZenFone 2 (ZE551ML) |
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RAM | 2 GB | 2 GB | Both phones have the same RAM size. |
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Internal Memory Size (Storage Capacity) | 16 GB | 16 GB | Both phones have the same internal memory capacity. |
Supported Flash Memory Cards (Expandable Memory) | microSDHC, microSDXC - up to 64 GB | microSDHC, microSDXC - up to 64 GB |
CAMERA | ASUS ZenFone 2 (ZE550ML) | ASUS ZenFone 2 (ZE551ML) |
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MAIN CAMERA |
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Number of Main Cameras | 1 | 1 | |
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Sensor Resolution | 13 Megapixel | 13 Megapixel | Both phones have the same camera resolution. |
Lens Aperture | F/2.0 | F/2.0 | Both phones have the same camera lens aperture. |
Focus Adjustment | Automatic | Automatic | |
HDR Mode | Auto HDR mode | Super HDR | |
Camera Modes | - | Panoramic pictures, night mode, wide selfie mode, Beauty mode | |
Face Recognition (Face ID) | - | Face detection | ASUS ZenFone 2 (ZE551ML) has face detection. |
Light Source | Dual LED flash | Dual LED flash | |
Video Resolutions | - | 1920 x 1080 (1080p) | |
Camera Features (Functions) | - | Zero Shutter Lag, Blue Glass Infrared Filter, By Pixel Super Resolution technology |
FRONT CAMERA |
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Number of Front Cameras | 1 | 1 | |
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Sensor Resolution (Front) | 5 Megapixel | 5 Megapixel | Both phones have the same front camera resolution. |
BATTERY AND CHARGING | ASUS ZenFone 2 (ZE550ML) | ASUS ZenFone 2 (ZE551ML) |
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Battery Capacity (Battery Size) | 3000 mAh | 3000 mAh | Both phones have the same battery capacity. |
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Battery Technology | Lithium polymer | Lithium polymer |
CELLULAR | ASUS ZenFone 2 (ZE550ML) | ASUS ZenFone 2 (ZE551ML) |
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Technology | WCDMA (UMTS) / GSM | WCDMA (UMTS) / GSM | |
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Mobile Broadband Generation | 4G | 4G | Both phones have the same mobile network generation. |
Operating System | Android 5.0 (Lollipop) | Android 5.0 (Lollipop) | |
User Interface | ASUS ZenUI 2.0 | ASUS ZenUI | |
Navigation | GPS, A-GPS | GPS, A-GPS, GLONASS, BeiDou |
COMMUNICATIONS | ASUS ZenFone 2 (ZE550ML) | ASUS ZenFone 2 (ZE551ML) |
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Data Transmission | GPRS, EDGE, HSDPA, HSUPA, HSPA+, FDD-LTE, DC-HSPA+ | GPRS, EDGE, HSDPA, HSUPA, HSPA+, FDD-LTE | |
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2G Band | 850 GSM, 900 GSM, 1800 GSM, 1900 GSM | 850 GSM, 900 GSM, 1800 GSM, 1900 GSM | |
4G LTE Band | Band 1, Band 2, Band 3, Band 4, Band 5, Band 7, Band 8, Band 20 | Band 1, Band 2, Band 3, Band 4, Band 5, Band 7, Band 8, Band 17, Band 20 | |
4G LTE Frequency | FDD 2100, FDD 1900 PCS, FDD 1800+, FDD 1700 - 2110 AWS, FDD 850, FDD 2600, FDD 900, FDD 800 DD | FDD 2100, FDD 1900 PCS, FDD 1800+, FDD 1700 - 2110 AWS, FDD 850, FDD 2600, FDD 900, FDD 700b, FDD 800 DD | |
Wireless Interface | IEEE 802.11a/b/g/n/ac | IEEE 802.11a/b/g/n/ac | |
Bluetooth | Bluetooth 4.0 | Bluetooth 4.0 | |
NFC | - | Yes | ASUS ZenFone 2 (ZE551ML) has NFC reader for mobile payments. |
Messaging Services | SMS, MMS | SMS, MMS |
FEATURES | ASUS ZenFone 2 (ZE550ML) | ASUS ZenFone 2 (ZE551ML) |
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Phone Functions | Speakerphone, call timer, conference call, vibrating alert | Speakerphone, call timer, conference call, flight mode, vibrating alert | |
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Sensors | Ambient light sensor, proximity sensor, digital compass, G-sensor | Ambient light sensor, proximity sensor, digital compass, gyro sensor, G-sensor | |
Dual SIM Card Capability | Yes | - | |
Additional Phone Features | OpenGL 3.0 support | Kids Mode, Glove Touchscreen Operation, ASUS BoostMaster technology |
OTHERS | ASUS ZenFone 2 (ZE550ML) | ASUS ZenFone 2 (ZE551ML) |
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Included Accessories | Headset, power adapter | Headset, power adapter |
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