Samsung Galaxy Tab S9 5G 8GB/128GB grafitová

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.

Fifth generation of mobile networks, so-called 5G, is a new standard whose parameters significantly exceed the current 4G networks. It brings up to a tenfold increase in speed, which together with a reduction in response time guarantees a highly stable Internet connection for virtually any device.

LTE (Long Term Evolution) marks the next generation of mobile data networks. This is an intermediate step between 3G and 4G. Although manufacturers and operators sometimes mistakenly refer to it as 4G, it is not a full 4G network. That's for LTE Advanced. The maximum theoretical data transfer rate is up to 175Mbps for download and up to 57.6Mbps for sending data in one frequency band. 

NanoSIM is the smallest, most advanced type of SIM card.

Plastic SIM cards are already dying a slow death. The future is eSIM technology. It is a separate chip that is built into the phone. What will change from using plastic SIM cards? Does the new modern eSIM technology have any pitfalls?

Najnovší konektor štandardu USB nesie označenie typ-C. Na rozdiel od predchádzajúcich má odlišný tvar, vďaka ktorému ho možno zasúvať obojstranne, avšak na úkor spätnej kompatibility s portami USB 2.0 alebo USB 3.0/3.1. Rýchlosť prenosu dát dosahuje až 10 Gbit/s. Novým rozšírením je potom štandard USB 3.2 Gen 2×2, ktorý dvojnásobne navyšuje prenosovú rýchlosť, a to až na 20 Gbit/s.

An ambient light sensor that monitors the ambient light levels and dynamically adjusts the display backlight intensity. A practical and handy feature, it is part of most modern phones. It turns the display brightness to the maximum in bright sunlight and dims the backlight in the dark. This makes the phone’s display perfectly readable in all lighting conditions without straining your eyes.

Zoom is the ability of the lens to bring distant objects closer. It is possible to change and adjust the focal length of the lens. The closer your subject is (shooting at a longer focal length), the more it reduces the aperture and the more likely it is for the final image to be affected by camera shake.

Android je operačný systém vyvíjaný spoločnosťou Google, ktorý v súčasnosti používa väčšina výrobcov mobilných telefónov. Ide o tzv. otvorený operačný systém a má prakticky neobmedzené možnosti prispôsobenia. Niektoré úpravy je možné vykonať pomocou základných nastavení, zatiaľ čo ďalšie modifikácie si môžete kedykoľvek stiahnuť z obchodu Google Play. Používateľ tak môže veľmi jednoducho upravovať nielen grafické rozhranie, ale aj spôsob ovládania telefónu. Slabšou stránkou systému Android je jeho vyššia náchylnosť na napadnutie škodlivým softvérom. Podrobnejšie sa popisu jednotlivých OS, ich výhod a nevýhod venujem v článku Porovnanie mobilných operačných systémov.

IP68 indicates the degree of protection of a device that is fully protected against dust and can also withstand immersion in water for more than 30 minutes or in a depth exceeding 1m. However, the specific conditions are determined by the manufacturer.