an i change my browser to ie?
You can download several browsers from the app store, just do a search for "browser". But Internet Explorer from Microsoft - no. And regardless of any other browsers installed, Safari remains the default, a limitation (more like restriction) of the iOS.
There is an app that lets you use your IE bookmarks.
CLOSING APPS: If an app has stopped responding or closes on launch, try the following: * Home screen * click the Home button twice * Tap and hold on the app * When it jiggles, tap the (-) to close it * Double-click the Home button and re-open the app