Hey Terri, I have two options for you to try:
Did you try factory reset yet? If not:
-Open the Settings menu.
-Go to ‘User and Backup’.
-Tap on the ‘Backup and Reset’ section.
-Press ‘Factory data reset’.
-Confirm that you wish to Factory Reset your smartphone.
-Enter the alternative password for your device.
-This will erase your phone(music, apps, etc.)
-This also confirms whether this is a software or hardware issue.
Go to settings and click on Wi-Fi. Then chose the network you want to connect to. Press it down for about 2 seconds and a window will pop up. Choose Modify Network. Scroll down to show advanced options. Click on it.Under proxy settings click on none and click save.
-Let me know how it goes.
-Please accept this answer if it answers your question.
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