I am using Windows 8.1 Denim release on AT&T/GoPhone - with Nokia Lumia 640. How can I upgrade to Windows 10?

[Windows Central Question]

I am using windows 8.1 denim release on att/gophone - with nokia lumia 640.

2 things i wouild like to know:

1) Can i upgrade to windows 10 yet, if i am a windows insider?

2) How do i close my open apps? i was thinking there would be an x somewhere in upper right hand corner?

 

[libra89]

Re: I am using windows 8.1 denim release on att/gophone - with nokia lumia 640.

1. Yes, you can. That is the only way at this time.

2. Long press (or hold) the back button to see all apps open and close them