Share your experience!
Please if you can help me I have many problems in my phone
1 - the Microphone sometimes work when I start a call it works then after a min it stops and I had to restart the call and sometimes it work good all day.
2 - I want to change the firmware
3 - the phone memory is full and I can't remove any thing or move a program to the internal storage.
Thanks 
Root your phone,downgrade or upgrade,free your memory,but be careful that it may void warranty.