The final conclusion:
I will have to replace this phone if I want a camera that forcuses correctly.
I really like my phone and have it customized the way I like it and it was because of that, I decided to try to replace the camera sensor. I went to ETrade supply and bought one for $16 and they shipped it very fast, and they have videos on Youtube taking phones apart, so the process was fast and easy. The problem: it still didn't fix my focus issues, so any one else having the same problems, it's not the sensor.