Looking for a phone for serious executive work, your grandparents, or simply for taking selfies? We'll help you choose a phone that will serve you well for a long time.
Indicates the size of a phone's second SIM card. Secondary SIM cards often have smaller dimensions than main SIM cards, and for some phones it is only possible to insert the secondary SIM if you remove the memory card.
AMOLED, or Active Matrix Organic Light-Emitting Diode, belongs to the OLED family of display technologies. This is the most advanced display technology on the market. Compared with competing technologies, it boasts faster response times, lower energy consumption, and sharper colours. You can also enjoy perfect black colour reproduction, which results in better readability in direct sunlight. AMOLED displays also offer wide viewing angles, which in the case of IPS displays reach almost 180 degrees. However, the disadvantage of AMOLED technology is its higher price and shorter lifespan.
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.
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.
The decreasing size of phones has led manufacturers to reduce the space for a SIM card. Besides standard SIM cards, you will also come across MicroSIM or NanoSim. Most operators offer a free replacement of the existing SIM card with a different type.
The screen size is measured by the distance between the left bottom and top right corners of the display. The screen size is usually given in inches, with 1"= 2.54cm.
Each type of display is suitable for different purposes.
The resolution specifies the number of pixels (pixels) that are displayed horizontally and vertically on a screen. The higher the resolution, the sharper and more detailed the image.
Rechargeable batteries require proper storage and handling. The most common are NiCd and NiMH batteries. Find out how to properly store rechargeable batteries for drills and screwdrivers. You'll also learn how and when to recharge them and how to prolong their capacity.
