Sometimes pretty randomly (like waiting in line, etc.) I have a moment to look at the new questions on my mobile phone. But it is inefficient to constantly monitor your phone. It'd be much better to have a notification on mobile devices to immediately pop up when a new question is posted, similarly to how, for instance, email, Twitter, etc. work on mobile phones. I have iPhone, but imagine Android works pretty much alike. I use this Stack Exchange app but it does not seem to have a feature of sending a notification popup on a locked phone for new questions. Have anyone accomplished this or have some experience / thoughts to share? Perhaps some other apps are able to do this? Thanks!
One of simple solutions is RSS feeder, as was kindly suggested by @Glorfindel in his answer below. It'd be nice if anyone can recommend good RSS feeder that works solidly with the new questions feed from MSE giving more or less timely popup notification on locked mobile device.