Choose the plan that best fits your budget. Whether you prefer to own your hardware upfront or spread the cost with a low monthly fee, both plans offer the same high-quality service.
Landline Replacement Plan Comparison
| Feature | Option 1: Buy Device | Option 2: Device Included |
|---|---|---|
| Monthly Cost | £10 + VAT | £18 + VAT |
| Upfront Cost | £79 + VAT (One-off for device) | £0 Upfront |
| Contract Term | 30-Day Rolling | 24-Month Contract |
| UK Calls | Unlimited Included | Unlimited Included |
| Hardware | Replacement Box included | Replacement Box included |
| Number Porting | Free of Charge | Free of Charge |
| Best For | Maximum Flexibility | Best Value / No Upfront Cost |
🛡️ Advanced Compatibility
Unlike basic VoIP services, the ONSIM Landline Replacement box is designed to work with more than just standard handsets. Both plans support:
Analogue Handsets: Keep using your existing corded or cordless phones.
Emergency Systems: Compatible with most Lifts and Emergency Call Buttons.
Security Alarms: Designed to support legacy analogue alarm systems that require a dial tone.
🚀 What’s Included as Standard?
Unlimited UK Calls: Call any standard UK landline (01, 02, 03) or UK mobile at any time without worrying about per-minute charges.
Managed Number Porting: Our dedicated team handles the process of moving your existing number from your current provider to ONSIM.
Plug-and-Play Setup: No engineers or technical knowledge required. Simply plug your phone into our box and you're ready to go.
Ready to Secure Your Number?
Both plans are launching soon.
To join the waiting list add your email address here.
To discuss a bulk roll-out for a business or residential complex, contact our sales team today.
📞 Call Sales: +44 333 880 4008
📧 Email: sales@onsim.uk