[Question] Drop Calls ZP950H

[patate29284]

Hello everyone.
I'm from Chile and bought this Zopo ZP950H from Shenzhen in May, and just got it 2 weeks ago. I really love the phone, its quality is great. However, I have 3 problem that I haven't been able to solve.
The first one, is that I upgraded it to 4.2.1, but I haven't been able to root it. I found the thread here, but as I am a new user, I can't download the zip to do so. Can anyone tell me where could I find the files needed? I already have flashtools and that, because I've been searching everywhere, and through flashtool I¡ve uploaded the phone.
My second problem, is that I can't use the phone correctly. My calls keep dropping. In almost every call, people tell me that they can't hear me, like there is some kind of static. I have to hang up and reboot the phone for it to work properly, but after 1 or 2 calls, it starts again. Can anyone tell me how to solve this issue?
My third problem is 3g. I have a SIM card with VirginMobile, which supports 850MHz (In Chile, there is no 2100MHz band). It connects with H+ almost everywhere, but the internet speed is really low. I mean, it is OK to chat, facebook Whatsup and stuff like that, but when it comes to web browser, it takes forever to load websites. If anone could help me I would be very gratefull. I really loved this phone and I'm thinking of buying many more to sell here in Chile, but if I can't solve my problems first, it will be disastrous.

PS: I had a Galaxy SII before this, and bought this instead of the Galaxy SIII. That much I liked this phone, and I don't want to regret my decision.

Thanks a lot in advance to everyone. You have a nice community in here.

[GizBeat]

You can root with the quick roots. Follow the tutorials in root forum.

For your other issues, try using a different baseband. Also in the root forum.

[Flaviu]

My second problem, is that I can't use the phone correctly. My calls keep dropping. In almost every call, people tell me that they can't hear me, like there is some kind of static. I have to hang up and reboot the phone for it to work properly, but after 1 or 2 calls, it starts again. Can anyone tell me how to solve this issue?

I have a SIM card with DigiMobile, which supports 2100MHz (In Romania is 2100MHz band). With the Orange SIM 2 900 MHz works perfectly