ALIGATOR A890 GPS Senior red

The SOS button or GPS locator is a function integrated into the phone or a separate device that, when pressed, sends a message with a warning or current location to predefined devices.

The FM radio function in mobile phones allows you to listen to analog radio broadcasts on very short waves. For most mobile phones, the radio function is only available with headphones connected, as the headphone cable serves as an antenna.

A method of rendering LCD-display images. In this case, the image is formed by a thin film of transistors. A thin part of the display consists of small transistors that control individual picture points, or pixels. Unlike previous technologies, it has brought high image quality, high contrast, lower power consumption and smaller size. Today, the biggest advantage of TFT displays is the price. Compared with premium OLEDs, they also have a significantly longer life.

Micro SD cards are used for storing data on mobile phones, GPS navigation and other portable devices.

Bluetooth is the communication tool used by a huge amount of electronics. Learn how the frequency signal is generated and how it's used. In a simple overview of the different versions, we will show how Bluetooth has evolved and been refined. You can also learn something about the specifications and security of this communication standard.