That is an older phone. All you can really try that will REALLY help is to do a factory wipe. It worked for my brothers casio gz'one. That phone has a very bad processor in it so i am glad i did the reset.
IF you have a mac, connect it over wifi and it should detect it through system preferences -> Printers & Scanners -> the little + button at the bottom of the list. For windows, you can just download the drivers, Control panel -> Printers -> add a new device. Now it should show up in the list. Select it and you should be good to go! Remember to connect it via wifi or Ethernet cable/lan.
I have a similar problem. My trackpad just sags like the button on the iphone 4s, meaning i have to keep fixing this problem but tilting my laptop upside-down. Imagine doing that in a library while getting homework done!