indyscubadiver

noticed last evening during a 2ish hour flight that while i had the tablet minimized during cruise that it stopped working at some point, workked seamlessly during preflight and climbout, but when i pulled it back up midlfight to check winds, the display was blank. tried clicking the home button at the bottom, reminimizing and bringing it back up. nothing fixed it, and it stayed dark for the remainder of the flight. not 100% sure if i did something wrong, so questions to determine that are certainly welcome.