how do i keep my texting screen vertical on my iphone.
iPhone 6 want to keep my screen vertical and changes to horizontal. How can I change this?
You can lock the screen in the vertical (portrait) position; note that it will be locked for all apps, not just texting. To lock/unlock open Control Center by swiping up starting from below the bottom of the Home screen. The orientation lock control is the one that looks like a lock partially surrounded by a semicircular arrow.