I have 5.1.1. 6 had a lot of bugs maps, etc when fist out. Have they been fixed yet. I ask because I went to t-mobile today. And for where I live they said the network reallocation is done. So I can get faster speeds now. But I'm still not getting anything beyond edge. He said my phone need to be upgraded to 6 to get better speeds and good coverage. He said 5 is outdated and only allows edge or might be the reason I'm not holding a faster signal. Sounds odd I have to upgrade but if I must I will. But not untill all bugs are out. Are any still left?? Anybody still unhappy with the decission to upgrade from 5 to 6??