I have an ipad wifi 16GB 4th generation and have started using skype. If I happen to be using it or it is resting, prior to going into sleep mode (after 5 mins), I am alerted by sound and a bubble, stating someone wish to start a video call and I accept. BUT, if the five minutes have elapsed and the screen is dark, which then requires a press of button and password, any call that comes in, and there is no visual or sound notification. Having googled/safari's this, it seems I am not alone. Many people have stated that they too don't get notification if their ipad is in sleep mode. That is, unless they go to settings>notification etc, but the route then is determined by ipad model I think. So, could someone please enlighten me, all I ask with respect, is that you don't just give a link and say sort it yourself, as my technology skills are somewhat restricted being a very old learner.