Panasonic P51

The Panasonic P51 mobile phone was released in May 2013 and boasts a number of features that were impressive for its time. Running on the Android 4.2 (Jelly Bean) operating system, this device is powered by a Quad-core 1.2 GHz Cortex-A7 processor and Mediatek MT6589 chipset, making it capable of handling multiple tasks with ease. The PowerVR SGX544 GPU ensures smooth graphics performance, while the 1 GB RAM provides decent multitasking capabilities.

The Panasonic P51 comes with 4 GB of internal memory, which can be expanded up to 32 GB using a microSD card. The 5-inch IPS LCD display has a resolution of 720 x 1280 pixels, offering crisp and clear visuals. With a pixel density of 294 PPI and support for 16 million colors, users can enjoy a vibrant viewing experience on this device.

In terms of connectivity, the Panasonic P51 supports 2G GSM and HSPA networks, as well as Wi-Fi 802.11 b/g/n for wireless internet access. It also features Bluetooth 4.0, GPS with A-GPS support, and a microUSB 2.0 port for charging and data transfer. The device comes with dual SIM card slots, allowing users to easily switch between two different numbers.

The main camera on the Panasonic P51 is an 8 MP shooter with autofocus and LED flash, capable of recording 1080p videos at 30fps. The front-facing camera is a 1.3 MP sensor that can capture 720p videos. Other features of the device include a 2500 mAh non-removable Li-Ion battery, accelerometer, proximity sensor, and compass.

Pros:
- Decent processor and GPU for smooth performance
- Expandable storage with microSD card slot
- Dual SIM functionality for convenience
- Good camera quality for its time
- Vibrant display with high pixel density

Cons:
- Limited internal storage
- Outdated operating system
- Low-resolution front camera
- No radio functionality
- Non-removable battery