So I got home from a 3 day trip to find that my wifi wasn't working. It showed all three bars, but I could send messages, check email, update news need or anything that required wifi. I looked online and found that most answers were to reset network settings, I did that, several times with no luck, Then I reset my phone to factory settings and then backed it up to the backup I made earlier that day. Still, 3 bars but unable to connect. All the other devices in the house are working fine. I have ios 8.4. Please help guys!!!!