Cannot add Google accounts on Huawei U8825D/G330D
This may be a late response but after finding the answer I thought I should publish it. If you have a Huawei phone that's been set up for the Chinese market then you'll find you cannot simply add a Google account.
First, using Huawei's own application manager, find Google's Play Store and install it. Once installed, use it to install Google's own YouTube app.
From YouTube you can sign in add any number of Google accounts.