WiFi calling allows you to use your cellular smartphone over an available wireless network if the cellular carrier’s network is unavailable or not strong enough. To enable WiFi calling on your iOS or Android device, follow the below instructions¹. If you do not have a Lab provided cell phone, you must first check that your cellular carrier has enabled WiFi and that your phone model is WiFi capable.
iPhone User Instructions
- Open the Settings app
- Select Cellular
- Select WiFi Calling and slide to “ON” position
- The device will ask you to verify the address for e911².
Android User Instructions
- Open the Settings app
- Select Connections, then Advanced Calling
- Select WiFi Calling and slide to “ON” position
- The device will ask you to verify the address for e911².
Instructions may vary slightly from one phone model to another. For additional help, please contact Telephone Services at TSC@lbl.gov or x7997.
¹Please contact Telephone Services if you are having issues using WiFi calling. Due to T-Mobile’s changes to their DNS settings, some T-Mobile customers with Android devices may not be able to connect. Users can try manually setting the DNS on their phone to use either “1dot1dot1dot1.cloudflare-dns.com” or “dns.google” using Android’s “Private DNS” feature. A restart of your phone is required. The Lab does not guarantee the outcome.
²The default address for all Lab issued smartphones is 1 Cyclotron Road, Berkeley, CA 94720. When using WiFi calling on a Lab issued smartphone away from the Lab, please update the address to reflect your current location. If you call 911 using WiFi, and emergency services cannot locate you, they will respond to the address you have entered in the phone. The address cannot be a P.O. Box.
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