The Doogee S97 Pro is a rugged smartphone best suited for users who prioritize extreme durability and long battery life over a slim design or flagship performance. This practical review highlights its advantages in real-world use and provides essential battery maintenance tips.
Design, Display, and Performance
Weighing 352 grams and measuring 170 x 84 x 16.2 mm, the Doogee S97 Pro is undoubtedly bulky, but it offers exceptional durability. It features an IP68/IP69K rating, MIL-STD-810G military-grade certification, a rubberized frame, and secure port covers. It reliably handles drops, water, dust, and harsh environments, while the customizable side keys further improve everyday convenience.
The 6.39-inch HD+ IPS display is bright enough for outdoor use, though the visuals look a bit soft by modern standards. Powered by a MediaTek Helio G95 processor paired with 8GB of RAM and 128GB of storage, the phone handles daily tasks, web browsing, and light gaming with ease, but you may experience lag when running heavy games.
The 48-megapixel main camera takes decent photos in daylight, but the ultra-wide, macro, and low-light performance is rather average.
Battery Life and Charging
The phone comes equipped with a massive 8500mAh battery that delivers 10 to 11 hours of screen-on time under heavy use. With moderate usage, it can typically last 3 to 4 days, with standby power consumption dropping below 1% per hour. This makes it perfect for travel, fieldwork, or situations where charging is inconvenient.
The 33W wired charging can power the battery up to around 50% within an hour, and a full charge takes about 75 minutes. The 10W wireless charging is slower and causes the phone to heat up. Compared to smaller batteries, a large-capacity battery naturally takes longer to charge completely.
Laser Rangefinder
The infrared laser rangefinder has a measuring range of up to 35 to 40 meters and can calculate area or volume. It is a highly practical tool for DIY projects and quick estimations, and it can be instantly activated via a dedicated button.
Battery Maintenance Guide
Develop the following habits to extend the lifespan of the lithium-polymer battery:
- Keep charge levels optimal: During daily charging, try to keep the battery percentage between 20% and 80%.
- Avoid extreme heat: The ideal temperature for charging and usage is 15–35°C. Never leave the phone in direct sunlight or inside a hot car.
- Prefer wired charging: Using the 33W wired charger is highly recommended, as it is more efficient and generates less heat than wireless charging.
- Prevent deep discharge: Avoid letting the battery frequently drop below 10%–15%.
- Calibrate regularly: Calibrate the battery every 2 to 3 months by charging it to 100% and then using it until it drops to a low single digit before recharging.
- Maintain good habits: Keep the charging port clean, use high-quality cables, enable power-saving mode, and restrict background applications.
- Storage tips: When storing the device long-term, keep the battery at around 50% in a cool place and check it periodically.
Consistent maintenance will ensure the battery maintains strong performance for 2 to 3 years.
Summary
The Doogee S97 Pro offers outstanding battery life and rugged durability alongside a practical laser measurement feature. For users who value reliability above all else, the trade-offs in size, display quality, and software support are quite acceptable. Practicing good battery habits will significantly extend its overall lifespan.