Ulefone Armor X3

Ulefone Armor X3

The Ulefone Armor X3 is a budget-friendly rugged IP68-rated smartphone. It runs Android 9 and sports a MediaTek processor, a 5,000mAh battery, a custom programmable hard-key button, a 5.5” HD+ IPS LCD display, and even provides a handy underwater mode. The phone supports face unlock, has expandable internal storage via SD card (32GB standard, up to 128GB), can withstand drops from up to 1.2 meters high, and a rugged underwater mode. It also features a nifty toolkit that’ll easily come in handy on any jobsite, including: a compass, magnifier, protractor, sound meter, plumb bob, picture hanging assistant, UV light tester, height measurer, barometer, and pedometer.

Esper is a device management company. We don’t sell devices directly, but offer in-depth hardware recommendations informed by thousands of customers and vetted for your use case, needs, and desired outcomes. Our vast partner catalog and relationships mean we can connect you directly to manufacturers, saving you time, trouble, and money. Welcome to the fast lane.
This device is no longer supported by the manufacturer or is no longer available for purchase. This page is for historical information only. If you have questions about hardware selection for your business, contact us.

Ulefone Armor X3




5.5” HD+ IPS LCD (1440 x 720p)


8MP rear + 2MP sub, 5MP front


MediaTek MT6580 (Cortex-A7 quad-core @ 1.3GHz


USB 2.0, microUSB, 3.5mm

Operating System (OS)

Android 9


5,000mAh Li-ion


Bluetooth 4.0
802.11 b/g/n


32GB (SD card up to 128GB)



Weight (in grams)

1 year


158 x 77.5 x 13.9mm






What Does “Esper Supported” Mean?

Esper Supported devices have been fully validated by Esper in our labs or deployed at a sufficient scale by customers to prove they meet the bar for real-world deployment. When you choose an Esper Supported device, you’re getting hardware that is sufficiently vetted for use on our device management platform and ready for deployment at scale.

What is Esper Foundation for Android? 

Esper Foundation for Android is an enterprise-grade operating system for company owned and managed hardware. It features long-term support, regular security patches, and customizable control over the entire experience, combined with robust and powerful device management tools. It’s the full-stack solution you’ve always dreamed of. 
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Choose the Right Hardware for Your Application

Inadequate hardware can restrict the functionality of your system, resulting in a subpar experience and performance. Esper tackles this with:
Zero-Touch Provisioning
Ready-to-go Secure Remote Debugging
Remote View and Remote Control

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Features of Esper Supported Devices

Ulefone Armor X3

Remote Control
and Debugging

Control, troubleshoot, and debug devices as if they’re right in front of you. From anywhere.
Ulefone Armor X3

Kiosk Mode

Lock a single app to the screen with top-notch security. No breaking it, no getting around it.
Ulefone Armor X3

Granular Software Deployment

Software delivery on your terms. Specific devices,  groups, and app version control.
Ulefone Armor X3

Automated Provisioning

Build custom blueprints to automate device provisioning and streamline setup. Over and over again.