Coolpad India — hearing problem as well network issue and fingerprint

Address:

560066

I bought coolpad 3505i few months ago. The day i bought till now i am having the issue on hearing. When i make call also i am not able to hear properly when i am getting calls also i am not able to hear properly. And the other issue is that i am not getting internet or network and finger print stopped working. And often it hangs i am very disappointed with this device.