Seems a system update causes my WiFi connection to fluctuate. I have tried everything, even getting a replacement phone. I have also had my Internet provider send 4 techs out to see if they could correct the problem. Restarting phone, and all other technical suggestions have not worked. This happens when I am sitting next to my router! I read a post by an iPhone user that outlines everything I have tried, and am now trying the further suggestions of Verizon in their reply to that user. Hoping something will work, but why do an update that breaks things? Really stupid.