Downloaded 10.0.3 onto iPhone 7 and now my phone won't accept wifi signal . I connects to my router but there is no signal - contacted apple who think it's a hardware issue - I think it's 10.0.3 that is cause . Is there a way to go back to 10.0.2?
Resetting network settings may resolve your issue but it will also remove all stored WiFi passwords. No big deal just put them back in as you re-connect to the networks you have connected to in the past.