I have Tom Tom 25. The problem started 3 monts ago after i did update on my device. Once I choose the destination and navigation map appears I start the journey. While driving the device changes to setting and jumps to voice setting. This happens every few minutes. I have done soft, hard and factory settings. the problem is still there. At times I am so fustrated. I have tried to search on Google for any solution. I found someone mentioned that the edges and glass need cleaning. I have done that as well to NO joy. Any help will be most appriciated. Tom Tom support is useless. I think they delibrately put this kind of problem so that people will buy another newer model. I will never buy Tom Tom device again after this type of problem creation by the company.