Hi, For a long time my iphone halts almost every time I use it. The only thing that solves it is shutting the screen and pressing the home button - to re-enter. Then it works great until the next time (can be a few seconds). it happened in ios7 and keeps on happening in ios 8 and 8.0.2 Is this a known problem? Is there a way to fix it? It looks like it is a software problem but it survived all the upgrades. Thanks.