Android UHF rugged PDA from original manufacturer is known as Mobile Data Terminal,

The industrial features of the rugged PDA are tough, durable, and portable which can be used in harsh environments, such as high-temperature workshops and cold areas in the north.

The handheld should also have a higher level of industrial protection which need to be certificated by MIL-STD-810G/H and IP65/IP67/IP68, such as Drop-proof, dust-proof, waterproof, oil-proof etc.

The Rugged handheld supports barcode scanning and RFID reading, with data acquisition and data processing capabilities.
As a mobile information processing tool, mobile phones are widely used in logistics, express delivery, manufacturing, retail, medical treatment, public utilities and other fields to improve efficiency.

Function

? Support for Android 9.0 system
? Optional 3G/4G all network communication, WiFi, Bluetooth and other communication modes
? Equipped with 4000mAh large capacity battery, the machine has a endurance of 4 hours
? IP65 high protection level, in accordance with MIL-STD-810G
? Support GPS, GLONASS, more accurate positioning
? Equipped with 13 million pixel auto focus camera, easy to collect images and video information
? Support 1D/2D, NFC and other functional modules to meet the application needs of multiple industries

https://www.ruggtablets.com/wp-content/uploads/Rugged-Handheld-PDA-EM-Q51.pdf

Tips

Rugged Handhelds and PDAs with right display

Most rugged handheld devices will be used outdoors, and so an outdoor-viewable display is especially important. Unlike commercial notebooks where outdoor readbility was/is not considered important, PDAs and Pocket PCs have had sunlight viewable displays for many years, and so finding a device with a good display is generally less of an issue. However, technology moves on, and we're less and less inclined to accept low contrast displays or excessive reflection and glare.
Resolution can also be an issue. For years, Palm and Pocket PC devices used fairly low resolution displays (mostly 240 x 320 pixels), but as handhelds are being used for more sophisticated applications like mapping or browsing, many devices now have full 480 x 640 VGA displays. And if industrial handhelds follow smartphones, which some undoubtedly will, we'll soon see resolutions once thought unthinkable for handhelds