4G Calling means that when you make or receive a phone call, your phone will stay on 4G so your internet doesn't slow down. That means you can use data at 4G speeds even when you're on a call. Sounds simple, but you'd be surprised how few mobile providers will let you do this.
Most phones have 4G Calling turned on by default. If it’s off, turn it on in your phone’s settings. Look for options like “VoLTE” or “4G Calling”.
Does 4G Calling cost extra?
No, it’s included in your plan.
Can I use 4G Calling abroad?
No, it only works in the UK.
What if I can’t use 4G Calling?
If 4G Calling isn’t available, your phone will switch to 3G or 2G.
With 4G Calling, your calls go over the 4G network, which makes them crystal clear between compatible phones. It's available across the whole of BT's 4G network
If you're using Wi-Fi Calling, 4G Calling means your calls will seamlessly hand over between Wi-Fi and 4G.
Find out more about Wi-Fi Calling
What do I need for 4G Calling?
It's available to anyone with BT Mobile - whether you've got SIM only, a Family SIM or a BT Mobile phone plan. You'll need a compatible device with the latest software.
4G Calling on iPhones (iOS)
- Make sure you have an iPhone 6 or later and a mobile plan with us.
- Check that your device's software is up to date.
- To do this, go into your phone settings, tap Software Update and install the latest update if available.
- You're now ready to use 4G Calling, as this is switched on by default.
4G Calling on Android phones
- Make sure you have a mobile plan with us.
- Check if your device supports 4G Calling. You can do that with our MY BT app (scroll down to Phone connectivity). Or log in to My BT on the website, go to Your Products and Mobile.
- Update your software. On most Android devices, tap Settings from the dropdown menu, then scroll down to "About phone" and tap Software Update. You're now ready to use 4G Calling, as this is switched on by default.