The machine uses the Blackberry OS. The system resembles Android but is a bit different, making it a better choice for doing serious things. You should know that this brand is not for gaming. You can find out the rest about this elsewhere. The hardware is not impressive, making it a bit slow to turn on. The machine is physically durable and looks cool, but the accessories that are bought separately are full of low-tech design faults, for example, their corresponding flex shell is too tight that it scratches off some coating of the machine when you put it on, after several months, the plastic deteriorates and cracks on several places. The protective film was labelled wrongly, wasting your time on sticking it again. Also, some android apps would not run well on this machine. However, if you use it for serious purposes, this is not a problem. After all, THE PRICE IS VERY GOOD. When you use the Blackberry OS, AVOID ANY CHINESE-MADE APPS AT ALL COSTS. The leading Chinese apps are very buggy and malicious. I am talking about the ones from Tencent, Alibaba, Sina, etc. Everyone who have been victimized by those apps understand what I am talking about. They are designed to do a lot of bad deeds in the background when installed on Android systems, so they all have some complicated codes for mischievous purposes. But the Blackberry OS is known for its security. When unrelenting malwares meet an unrelenting OS, the result is crashing. Right, many apps from the authorities and giant companies will do suspicious things. The only difference is, the Chinese like to do them blatant enough so that you cannot ignore, giving the system crucial damages like frequent crashing or deleting files that have nothing to do with them. Very often, they are designed to be make themselves impossible to uninstall correctly, forcing you to reinstall the whole OS or send the machine to an official repair centre to make the machine work again. The European and US ones will do the same thing - take information silently, but they leave everything else intact.