In depth comparison and review of ASUS ZenFone Zoom (ZX551ML) and Ulefone Armor X3. Compare sizes, cameras, batteries, memory, and other important specifications and features to easily choose the right phone for you. Our goal is to help you uncover differences between the products and find the phone that will best fit your needs.
| DESIGN AND DIMENSIONS | ASUS ZenFone Zoom (ZX551ML) | Ulefone Armor X3 |
|---|
| Product Type | Smartphone | Smartphone | |
|---|---|---|---|
| Manufacturer Model Number | ZX551ML | - | |
| Form Factor | Touch | Touch - Rugged | |
| Height | 158.9 mm | 158 mm | ASUS ZenFone Zoom (ZX551ML) has greater height than Ulefone Armor X3. |
| Width | 78.8 mm | 77.5 mm | ASUS ZenFone Zoom (ZX551ML) has greater width than Ulefone Armor X3. |
| Depth | 12 mm | 13.85 mm | ASUS ZenFone Zoom (ZX551ML) is narrower than ASUS ZenFone Zoom (ZX551ML). |
| Weight | 185 g | 235 g | ASUS ZenFone Zoom (ZX551ML) is lighter than ASUS ZenFone Zoom (ZX551ML). |
| Body Colour | Ceramic white | Pure black | Silver | |
| Body Material | - | Aluminium alloy, thermoplastic polyurethane (TPU) | |
| Protection | - | Dustproof, waterproof, drop-proof, splash-resistant | |
| Waterproof (Water-resistant) | - | Yes | Ulefone Armor X3 is waterproof. |
| IP rating | - | IP68, IP69K, IP69 | |
| SAR Value | 0.432 W/kg (body), 0.343 W/kg (head) | 0.356 W/kg (body), 0.186 W/kg (head) | |
| Connector Type | Headset jack - mini-phone 3.5mm Micro-USB - 5 pin Micro-USB Type B |
Headset jack - mini-phone 3.5mm Micro-USB - 5 pin Micro-USB Type B |
|
| SIM Card Type (Size) | Micro SIM | Nano SIM | |
| SIM Card Qty | - | Dual-SIM | |
| SIM Card Configuration Details | - | Nano SIM + nano SIM/microSD |
| DISPLAY | ASUS ZenFone Zoom (ZX551ML) | Ulefone Armor X3 |
|---|
| Display Type | LCD display | LCD display | |
|---|---|---|---|
| Display Technology | IPS | IPS | |
| Screen Size (Display Size) | 5.5" | 5.5" | Both phones have the same screen size. |
| Screen Resolution (Display Resolution) | 1920 x 1080 pixels | 1440 x 720 pixels | ASUS ZenFone Zoom (ZX551ML) has better screen resolution than Ulefone Armor X3. |
| Display Format | Full HD | HD+ | |
| Pixel Density | 401 ppi | 293 ppi | ASUS ZenFone Zoom (ZX551ML) has better pixel density than Ulefone Armor X3. |
| Aspect Ratio | - | 18:9 | |
| Colour Depth | 16.7 million colours | - | |
| Display Protection (Screen Protector) | Corning Gorilla Glass 4 (scratch resistant glass) | - |
| PROCESSOR | ASUS ZenFone Zoom (ZX551ML) | Ulefone Armor X3 |
|---|
| Processor Type (CPU) | Intel Atom | MediaTek | |
|---|---|---|---|
| Processor Number | Z3590 | MT6580 | |
| Clock Speed | 2.5 GHz | 1.3 GHz | ASUS ZenFone Zoom (ZX551ML) has higher clock speed than Ulefone Armor X3. |
| Processor Core Qty | Quad-core | Quad-core | Both phones have the same number of phone cores. |
| Graphics System (GPU) | PowerVR G6430 | - |
| MEMORY | ASUS ZenFone Zoom (ZX551ML) | Ulefone Armor X3 |
|---|
| RAM | 4 GB | 2 GB | ASUS ZenFone Zoom (ZX551ML) has more RAM than Ulefone Armor X3. |
|---|---|---|---|
| Internal Memory Size (Storage Capacity) | 32 GB | 32 GB | Both phones have the same internal memory capacity. |
| Supported Flash Memory Cards (Expandable Memory) | microSDHC, microSDXC - up to 128 GB | microSDHC, microSDXC - up to 128 GB |
| CAMERA | ASUS ZenFone Zoom (ZX551ML) | Ulefone Armor X3 |
|---|
| MAIN CAMERA |
|---|
| Number of Main Cameras | 1 | 2 | |
|---|---|---|---|
| Sensor Resolution | 13 Megapixel | 8 Megapixel | ASUS ZenFone Zoom (ZX551ML) has better camera resolution than Ulefone Armor X3. |
| Lens Aperture | F/2.7-4.8 | F/1.8 | Ulefone Armor X3 has better lens aperture than ASUS ZenFone Zoom (ZX551ML). |
| Lens Construction | - | 5-element | |
| Optical Image Stabiliser (OIS) | Optical Image Stabiliser (OIS) | - | ASUS ZenFone Zoom (ZX551ML) has optical stabilisation. |
| Focus Adjustment | Automatic | Automatic | |
| Laser Auto Focus | Yes | - | |
| Digital Zoom | 3x | - | |
| HDR Mode | Auto HDR mode | - | |
| Camera Modes | Panorama | Underwater mode | |
| Face Recognition (Face ID) | Face detection | - | ASUS ZenFone Zoom (ZX551ML) has face detection. |
| Light Source | Dual LED flash | Dual LED flash | |
| Video Resolutions | 1920 x 1080 (1080p) | 1920 x 1080 (1080p) |
| SECOND CAMERA |
|---|
| Sensor Resolution (2nd Camera) | - | 2 Megapixel |
|---|
| FRONT CAMERA |
|---|
| Number of Front Cameras | 1 | 1 | |
|---|---|---|---|
| Sensor Resolution (Front) | 5 Megapixel | 5 Megapixel | Both phones have the same front camera resolution. |
| Lens Aperture (Front) | F/2.0 | F/2.0 | Both phones have the same front camera lens aperture. |
| Lens Element Qty (Front) | - | 4-element |
| BATTERY AND CHARGING | ASUS ZenFone Zoom (ZX551ML) | Ulefone Armor X3 |
|---|
| Battery Capacity (Battery Size) | 3000 mAh | 5000 mAh | Ulefone Armor X3 has larger battery capacity than ASUS ZenFone Zoom (ZX551ML). |
|---|---|---|---|
| Standby Time | - | 440 hours | |
| Talk Time | - | 1500 minutes | |
| Run Time Details | - | Talk: up to 1500 min Standby: up to 440 hrs Playback (Music): up to 34 hrs Playback (video): up to 9 hrs |
|
| Battery Technology | Lithium polymer | Lithium polymer |
| CELLULAR | ASUS ZenFone Zoom (ZX551ML) | Ulefone Armor X3 |
|---|
| Technology | WCDMA (UMTS) / GSM | WCDMA (UMTS) / GSM | |
|---|---|---|---|
| Mobile Broadband Generation | 4G | 3G | ASUS ZenFone Zoom (ZX551ML) has more advanced generation mobile network. |
| Operating System | Android 5.0 (Lollipop) | Android 9.0 Pie | |
| User Interface | ASUS ZenUI 2.0 | - | |
| Navigation | A-GPS, GLONASS, BeiDou | GPS |
| COMMUNICATIONS | ASUS ZenFone Zoom (ZX551ML) | Ulefone Armor X3 |
|---|
| Data Transmission | GPRS, EDGE, HSDPA, HSUPA, HSPA+, LTE | GPRS, EDGE, HSDPA, HSUPA, HSPA+ | |
|---|---|---|---|
| 2G Band | 850 GSM, 1800 GSM, 1900 GSM | 850 GSM, 900 GSM, 1800 GSM, 1900 GSM | |
| 3G UMTS Band | - | Band 1, Band 2, Band 4, Band 5, Band 8 | |
| 3G UMTS Frequency | - | 2100, 1900, 1700, 850, 900 | |
| 4G LTE Band | Band 1, Band 2, Band 3, Band 5, Band 7, Band 8, Band 9, Band 18, Band 19, Band 28 | - | |
| 4G LTE Frequency | FDD 2100, FDD 1900 PCS, FDD 1800+, FDD 850, FDD 2600, FDD 900, FDD 1800, FDD 800 lower, FDD 800 upper, FDD 700 APT | - | |
| Wireless Interface | IEEE 802.11a/b/g/n/ac | IEEE 802.11b/g/n | |
| Bluetooth | Bluetooth 4.0 | Bluetooth 4.0 | |
| Bluetooth Profiles | A2DP | - | |
| NFC | Yes | - | ASUS ZenFone Zoom (ZX551ML) has NFC reader for mobile payments. |
| Messaging Services | SMS, MMS | SMS, MMS |
| MEDIA | ASUS ZenFone Zoom (ZX551ML) | Ulefone Armor X3 |
|---|
| Supported Digital Audio Standards | - | AAC, AMR, MP3, FLAC | |
|---|---|---|---|
| Supported Digital Video Standards | - | MPEG-4, 3GP |
| FEATURES | ASUS ZenFone Zoom (ZX551ML) | Ulefone Armor X3 |
|---|
| Phone Functions | Speakerphone, call timer, conference call, vibrating alert | Speakerphone, voice control, call timer, conference call, flight mode, voice dialing, vibrating alert | |
|---|---|---|---|
| Sensors | Accelerometer, proximity sensor, digital compass, gyro sensor | Accelerometer, digital compass, L-sensor, P-sensor | |
| Security Devices | - | Face recognition | |
| Additional Phone Features | Multitasking | Face Unlock, Glove mode, customised button |
| OTHERS | ASUS ZenFone Zoom (ZX551ML) | Ulefone Armor X3 |
|---|
| Included Accessories | Power adapter | USB cable, power adapter, SIM card removal tool, tempered glass screen protector | |
|---|---|---|---|
| Compliant Standards | - | MIL-STD 810G, IP68, IP69K | |
| Max Depth of Water Resistance | - | 1.5 m | |
| Max Operating Temperature | - | 60 °C | |
| Min Operating Temperature | - | -20 °C |
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