📥 Inbound calls going straight to voicemail

Troubleshooting: Enabling VoLTE

To use the ONSIM service correctly, VoLTE (Voice over LTE) must be enabled on your device at all times. If VoLTE is disabled, your outgoing calls may fail to connect, and all incoming calls will be sent directly to voicemail.

When to check your VoLTE settings:

• You are unable to make or receive calls.

• You have recently factory reset your phone.

• You have recently reset your network settings.

How to fix call issues:

If you are experiencing connectivity problems, the first step is to ensure VoLTE is active in your device settings.

Please click on your handset type below to be taken to the correct steps:

• Apple iPhone (Multiple Sims on Device)
• Apple iPhone (Only Sim on Device)
• Samsung Galaxy *
• Google Pixel *

*On Android devices, the settings and operating systems vary slightly from one model to another. Below you'll find the most common settings to enable VoLTE.

Apple iPhone (Multiple Sims on Device)

1. Go to Settings
2. Mobile Data/ Mobile Service
3. Under "SIMs"  tap Onsim Sim
4. Tap Voice & Data.
5. Tap the VoLTE toggle to turn it on. 

Apple iPhone (Only Sim on Device)

1. Go to Settings
2. Mobile Data / Mobile Service
3. Mobile Data Options
4. Tap Voice & Data.
5. Tap the VoLTE toggle to turn it on.

Samsung Galaxy

1. Go to Settings
2. Tap Connections
3. Mobile networks.
4. Tap the VoLTE calls toggle to turn it on. 

Google Pixel

1. Go to Settings
2. Select network and internet
3. Select Internet
4. Select the settings cog next to the relevant SIM
5. Turn on the VOLTE slider, change preferred network type to LTE

Still having trouble?

If you have confirmed that VoLTE is enabled but you are still unable to make or receive calls, please contact our support team for further investigation.

• Email: support@onsim.uk