The XP3plus 5G measures 4.84 by 2.36 by 1.14 inches (HWD) and weighs 8.64 ounces, which is larger and heavier than the similarly rugged Kyocera DuraXA Equip ($299.99) at 4.36 by 2.22 by 1.07 inches, 6.81 ounces.
(Credit: Iyaz Akhtar)
Sonim builds the XP3plus from plastic, with Gorilla Glass covering its external and internal screens. The side and back portions feature various molded textures and finishes, making it easier to locate specific parts of the phone by touch. The phone is somewhat chunky when closed, but easier to hold when flipped open.
The two portions of the phone are not symmetrical. The top half is thinner and shorter than the bottom section. Thanks to this design, it requires little effort to open the phone one-handed with your thumb.

(Credit: Iyaz Akhtar)
The front features exposed screws, a camera, a screen, and two external navigation buttons. Sonim also makes a camera-free model available at the same prices. A volume rocker and a dedicated, yellow push-to-talk button are on the left side. A dedicated red emergency key is on the right, as are a USB-C port and a 3.5mm headphone jack. The latter two are covered by an attached plastic door to seal them up against dirt and liquids.

(Credit: Iyaz Akhtar)

(Credit: Iyaz Akhtar)
The removable battery cover screws into place, leaving two pogo pin connectors exposed for charging docks. Sonim includes a small, flat-head screwdriver in the box. Underneath the rear panel, you’ll find a removable battery, a SIM tray, and a microSD card slot. Both cards are secured by locking doors, so they will stay in place even if you drop the phone with the rear panel removed.

(Credit: Iyaz Akhtar)
When opened, the XP3plus looks like nearly every flip phone from the past. A small earpiece speaker and screen with a thick bezel take up the top half, while the bottom half features menu buttons, a directional pad with a centered select button, a number keypad, and a large speaker grille. The buttons have shallow travel, but a springy feel.

(Credit: Iyaz Akhtar)
The XP3plus has an IP68 rating, which means it is protected against dust and water. It also holds several certifications, including MIL-STD-810H, indicating it can withstand vibration, shock, and extreme temperatures. Further, it is chemical-resistant and can be disinfected with bleach, detergent, or rubbing alcohol. The XP3plus can withstand 1.5-foot drops onto concrete and up to a metric ton of pressure. This phone is built to last.
As for colors, the XP3plus is available only in black.
