The Chinese company TCL, which owns the popular brand Alcatel, officially unveiled the smartphone under its own brand called TCL 3S. Novelty has several features that distinguish it from its class. Thus, the new device TCL 3S received the price of 129 dollars, which can be called low-end segment, but is equipped with an iris scanner, which is particularly rare among smartphones. Iris scanner can be used similar to fingerprints – to unlock the device and enter the application, which is usually protected by a simple password.  It is worth noting that, in spite of its really low price,