· ONSIM Team · News · 3 min read
ONSIM adds support for VoWiFi / WiFi Calling
ONSIM are pleased to be able to finally offer WiFi calling to improve indoor coverage for UK customers.
📣 Big News: WiFi Calling is Here!
We’re excited to announce that WiFi Calling is now available to all ONSIM customers in the UK — both existing users and anyone who signs up from today!
That means whether you’ve already got an ONSIM SIM or you’re just thinking about joining us, you can now make and receive calls using WiFi, in addition to the usual mobile networks.
🌟 What Is WiFi Calling and Why It Matters
WiFi Calling allows your phone to use a WiFi connection to make and receive voice calls when your mobile signal is weak — or even when there’s no signal at all.
It works just like a normal phone call:
- Same number
- Same dialler
- Same contacts
- No additional app required
As long as your phone is supported by ONSIM and meets the minimum requirements (Details here) you can stay connected with just WiFi connection.
✅ Benefits of WiFi Calling with ONSIM
Here are some of the major advantages you’ll enjoy with ONSIM WiFi Calling:
1. Better Indoor Coverage
If your home, office, or workspace has thick walls or poor mobile reception, WiFi Calling ensures you can still make and receive calls clearly.
2. Stay Reachable Without a Mobile Signal
As long as you’re connected to WiFi, people can reach you — and you can make outgoing calls — even if you’re underground or in a basement.
3. Seamless Calling Experience
WiFi Calling integrates with your regular phone app and number.
There’s no need for extra apps or call forwarding — it just works.
4. Improved Call Quality
Enjoy clearer, more reliable calls over a stable WiFi connection, with fewer dropouts or interference — perfect for areas with weak mobile coverage.
⚙️ How to Enable WiFi Calling
To make the most of WiFi Calling, check the following:
- ✅ Your device is supported and meets the requirements for WiFi Calling and it’s turned on in your phone settings.
- ✅ VoLTE (Voice over LTE) is enabled — it often works hand-in-hand with WiFi Calling for best performance.
- ✅ You’re using a stable WiFi connection for better quality and fewer dropouts.
- ✅ Your ONSIM SIM card is active and updated with the latest settings.
- ✅ You are in the UK.
If you have any issues connecting or using WiFi calling on ONSIM, please reach out to support.
🎯 The Bottom Line
If you’re an existing ONSIM customer in the UK, great news — WiFi Calling is now available to you automatically.
If you’re considering switching to ONSIM, this is one more reason to join:
A mobile network that keeps you connected — even in signal dead zones or places with strong WiFi but weak mobile coverage.
If you’re roaming or a customer in one of our other home-zones WiFi calling will be coming (separate announcement to follow).
Stay connected. Stay clear with ONSIM.
