FOSSiBOT F115 Ultra Review

Overview

A rugged smartphone earns its keep not by looking tough, but by expanding what you can do when conditions turn hostile - and the FOSSiBOT F115 Ultra arrives with a toolkit that feels purpose‑built for the field. Its oversized battery isn't just about longevity; it's the kind of endurance that lets you stay off‑grid without glancing at the percentage. The pulse‑laser rangefinder turns the phone into a precision instrument for measuring distance, aided by a telephoto lens when you need clarity at a distance. The thermal camera reveals heat signatures through smoke, fog, or darkness, while the Night Vision module pushes even deeper, pulling detail out of pitch‑black environments where ordinary sensors give up. It's a brick‑solid tool built for people who measure their days in harsh conditions and demanding tasks.

FOSSiBOT F115 Ultra Specifications

The FOSSiBOT F115 Ultra features a 6.78‑inch IPS display with an FHD+ resolution of 1080 x 2460 pixels and a 120 Hz refresh rate. The screen delivers up to 430 nits of brightness and a 1300:1 static contrast ratio. Covered with Corning Gorilla Glass 3, the screen also supports glove mode. A substantial 20,000 mAh battery with Silicon-Carbon (Si/C) anode keeps the lights on, ensuring up to 2085 hours of standby time and up to 205 hours of talk time. It supports 33W fast charging and 10W reverse wired charging.

The FOSSiBOT F115 Ultra's camera setup is quite versatile. The department is headed by a 50MP Sony IMX766 shooter with an f/1.89 aperture. It is adjoined by a 64MP OmniVision OV64B Night Vision unit aided by a 3W IR lamp that enables the lens to see up to a 50-meter distance in pitch dark. Finally, the rear trio of shooters rounds off with a thermal imaging sensor with a 160 x 120 resolution. A 32MP Sony IMX616 camera is responsible for selfies on the front of the device.

A MediaTek Dimensity 7100 (MT6858) ticks under the rugged hood of the F115 Ultra. This 5G 6nm mobile platform pairs a 2.4 octa-core CPU and a Mali-G610 GPU. The smartphone arrives with 12GB of LPDDR4X RAM that can be virtually expanded with up to 24GB. The built-in storage measures 256GB and can be expanded via a microSD card of up to 2TB. The model features a hybrid, dual-SIM tray accommodating two Nano‑SIM cards with 5G support or a Nano-SIM and a microSD card.

The F115 Ultra wireless connectivity options include NFC, Bluetooth 5.4, Wi‑Fi 6 (802.11ax), Wi‑Fi Direct, Wi‑Fi Hotspot, and Cast Display. Additional connectivity features include Netless Chat, radio, and a USB Type‑C 2.0 port. Furthermore, the device is equipped with a customizable key, a dedicated microphone on/off key, and a side-mounted fingerprint reader. Running on Android 16, it supports GPS, GLONASS, Galileo, and Beidou. The device is certified to IP68, IP69K, and MIL‑STD‑810H standards, ensuring resistance to water, dust, drops, impacts, and extreme temperatures.

Complete FOSSiBOT F115 Ultra specifications.

What's in the box

The FOSSiBOT F115 Ultra comes packaged in the signature FOSSiBOT box in flame orange color with the brand logo imprinted on the cover. Inside, the device is accompanied by the following accessories:

• 11V/3A (33W) charger (EU plug)
• USB Type-C to Type-C cable
• Hand strap with screws and a screwdriver
• SIM tray pick
• Paperwork