I am a big fan of Waze, a community-based traffic and navigation app. This app is sending and receiving data and this requires a permanent internet connection. From time to time I also have to make or receive a phone call. My car has a build in Bluetooth interface so my calls are quite easy to be made using my steering wheel controls. This is just one example of browsing internet while making a phone call. You can also imagine a lot more…. like a friend is asking you to share a link, you just put the call on speaker and start browsing or open an app… or you are using your phone to share its internet connection with your laptop – making a phone call should not disable your internet connection.
In order to be able to browse internet during a phone call you need two components:
1. a compatible phone (4G/LTE)
2. network coverage (4G LTE network)
Be sure you enable your 4G for both voice & data. For example, on your iPhone go to Settings → Mobile Data → Mobile Data Options → Enable 4G and Select “Voice & Data”.
Remeber that due to network coverage, your phone will automatically switch between 4G, 3G, E … older network protocols will disable your internet connection, the phone call has priority.