I have an issue with my iphone not registering the APN internet2.voicestream.com it will get entered in and ill press the home button to get back to the springboard and once i get into Settings>general>network>EDGE to look at the address its gone. I am not rebooting my iphone it happens even when I backtrack one screen.
Also I cannot get the WIFI to work to use the installer. The installer shows no apps to be downloaded.

Can someone help with the APN not sticking and help getting the installer to work thanks!