dear admin! i have very bad issue about phone signal, i jusst bough my phone from aliexpress, every function is find but the the phone signal go vẻy bad, signal very low and i dont wanna say almosst the times the phone can not find signal. i already check the frequency of the phone and our country i...

Dear admin! I need you to support me this issue , This BV 7000pro i just bough on Aliexpress. Everything is good , the only thing make me disappointed is the anten or signal, please help me/. I already check the frequency of the manufacture it's same in vietnam. but i dont know how it does not work ...