Phone Number Portability Number Portability. 10 Points.?

Number Portability. 10 points.? - phone number portability

So I mobile operators due to the constant dropped calls. I've heard that changing the company, while retaining the number one way to turn and lost still having problems with dropped calls and texts is. Is that true?

(I know, I have left is still covered calls, but a 6 days is absurd, so I'm going to sprint)