1. Open Settings-WLAN-Menu Key-Advanced Settings-Set Network Connection Method-Change "Manual" to "Automatic".
2. Open Settings-WLAN-click the wireless network name-forget-try to reconnect.
3. Try changing to another Wifi environment.
4. Back up data (contacts, text messages, photos, etc.) and try restoring factory settings (Settings-Reset/Privacy-Restore factory settings).
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