After half a year, you can change it to a new phone, it just hung for me, I tried to reboot it, but it didn’t turn on anymore ! I took it to the repair, they reflashed it, as a result, after that the phone now slows down, if you sit in any application for a long time, it overheats and slows down. I'm not talking about the video conversation on whatsapp. It is also a problem to listen to voice messages on WhatsApp, this glitch has been from the very purchase of the phone. At first I thought it was the vatsap itself that was slowing down, but it turned out to be a phone. And yes, it’s uncomfortable to talk, the screen always lights up, even if you block it. In general, there are more shortcomings . I do not advise you to buy, or if for a short time, in my case it is exactly half a year . Now you need to buy a new one again .