Kyocera KY-51B

The Kyocera KY-51B is a rugged and durable mobile phone designed for those who need a device that can withstand tough conditions. Running on the Android 11 operating system, this phone is powered by a Qualcomm Snapdragon 480 processor clocked at 2.00 GHz and has 8 cores, along with an Adreno 619 GPU for smooth performance. It comes with 4 GB of RAM and 64 GB of internal memory, which can be expanded up to 1 TB using a microSD card.

The KY-51B features a 6.1-inch color IPS TFT display with a resolution of 1080 x 2400 pixels and a pixel density of 431 ppi. The display is protected by a durable material to prevent scratches and damage. It also has NFC, Bluetooth v5.1, GPS, GPRS, EDGE, WiFi, DLNA, IrDA, and USB Type-C connectivity options.

The main camera on the KY-51B is 48 MP with LED flash and digital zoom, capable of recording videos in H.264, H.265, and MPEG4 formats at 30 fps. The selfie camera is 8 MP with flash and digital zoom as well. This phone is also equipped with a radio, waterproof rating of IP65, IP68, and MIL-STD-810H, a 4500 mAh battery with quick and wireless charging capabilities, and a range of sensors including accelerometer, altimeter, barometer, fingerprint scanner, gyroscope, and more.

Pros:
- Rugged and durable design
- Powerful processor and GPU for smooth performance
- Expandable storage up to 1 TB
- High-resolution cameras with advanced features
- Waterproof and MIL-STD-810H certified
- Wide range of sensors for added functionality

Cons:
- Limited internal storage capacity
- Heavy and bulky design may not be suitable for everyone
- Higher price point compared to non-rugged smartphones