I don't like the Vivo v5. Review on Vivo V5

I don't like the Vivo v5 because I bought this phone last month start 15 days it will be work fine but after 15 days creating a problem that the screen will be disappear sometime so I have to switch off my phone and then switch on my phone so this is the issue which I face after buying this phone customer service is also bad of this phone cause I call service centre and didn't pick up my phone then I call the customer care number and they can't connect the phone to the executive of the service centre so I have to go to the service centre then I talk to the employee and then I give my phone and after 3 or 4 days they call me and I pick my phone and after 15 to 20 days again the problem will start screen will be disappeared I am very disappointed from Vivo the processor of this phone is 1.5 gigahertz Octa Core processor but the GPO of the phone is MediaTek not a Snapdragon so you know that what's the difference between MediaTek and Snapdragon and the camera of the phone is 30 minutes and rear camera and the front facing camera is 20% yeah its awkward I know that but its truth but the rear camera is better than the front facing camera I compare both the cameras the phone is not user friendly and a 4GB RAM of this phone is good that the phone will not hang which makes phone better lookwise the phone is an ok ok the style of the phone is good but not excellent and it's not value for money because in this year you can buy many phones from Motorola the trustworthy companies.!