Connection to wifi now isn't connecting. It detects networks (networks are available) says obtaining IP address then signal drops in and out and it never connects. When not trying to connect (obtain IP address) signal is strong and stable. The signal is plenty strong that I'm trying to connect to, and it's a previously used open wifi at a coffee shop that worked perfectly. An individual there with an S3 was able to connect without issue. I've tried additional open wifi locations with same negative results. Ideas, suggestions. Thx in advance.