it happened to me a few times, the last time I saw it found that the device is unlocked but the backlite is not lightning up
before that, 1 time smart keyboard at the back problem no light, plus a few smart keyboard as cover make the ipad looks off - not sure if it is the backlite, i was in street and force shutdown/wake by home+power
before that, 1 time smart keyboard at the back problem no light, plus a few smart keyboard as cover make the ipad looks off - not sure if it is the backlite, i was in street and force shutdown/wake by home+power