BT One Phone alternative
BT One Phone, the mobile-first "one number" service, is being withdrawn, and customers are being moved onto a new long BT contract whether they chose it or not. Voxora is a UK cloud phone system you can choose instead. Be aware of one honest difference: Voxora is an app, not a mobile SIM, so your team use it on the phones they already have rather than a new SIM. You keep your existing numbers through free porting, pay a published per-user price with no long contract, and gain AI call handling One Phone never offered.
Last reviewed July 2026. Get a free, no-obligation switching plan.
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One business number, ringing the app on your existing phone and your desk at once.
Why BT One Phone is being withdrawn
BT One Phone was a mobile-first unified communications service: one business number that worked across a mobile SIM and a desk, with in-building coverage and cloud call management. BT has been retiring the product and moving customers onto its other business services. In practice that means you are going to be moved anyway, so this is the moment to choose a replacement on merit rather than default to whatever BT rolls you into, which is typically a fresh multi-year contract.
BT usually points One Phone customers at BT Cloud Voice or a mobile bundle with Microsoft Teams. Those are reasonable options, but they keep you inside a long BT contract with annual price rises. It is worth comparing an independent cloud communications platform before you sign, because the modern equivalent of "one number on every device" is now an app, not a SIM, and that changes what good value looks like.
BT One Phone vs Voxora: what you keep, what is new, what is different
An honest side by side, including the one thing that genuinely changes.
What you keep
- Your existing business numbers, moved by free porting
- One number that reaches you on any device
- Call routing, hunt groups and voicemail
- A single app and portal for the whole team
What is new
- An AI Receptionist for out of hours and overflow
- Call queues with a live wallboard
- Call recording and AI call transcription
- Published pricing and no long lock-in
What is genuinely different
- Voxora is an app, not a mobile SIM, so there is no new SIM and no new handset
- It runs over your data or wifi rather than a dedicated mobile network
- If you specifically need mobile SIMs, that is a different type of product
Your BT One Phone replacement options
The realistic routes are BT's own replacement, or an independent cloud provider. Here is how they compare, honestly, including where BT keeps an advantage.
| Moving off BT One Phone | BT's own replacement (Cloud Voice or mobile + Teams) | Voxora |
|---|---|---|
| Keep your existing numbers | Yes, by porting | Yes, free porting we run for you |
| One number on mobile and desk | Yes | Yes, via the app on any device |
| Mobile SIM on the mobile network | Yes, with a mobile bundle | No, Voxora is an app, not a SIM |
| New hardware to install | Sometimes | ✓ No, use the phones you have |
| AI call handling | Not typically included | ✓ AI Receptionist and transcription |
| Contract length | Typically a new multi-year term | ✓ Monthly rolling, no long lock-in |
| Pricing basis | By quote, with CPI-linked rises | ✓ Published, from £6.95 ex VAT |
| In short | A SIM-based service inside a new long BT contract | An app-based cloud system you can leave any time |
Comparison based on publicly available information, July 2026. BT's products and pricing change over time, so confirm the current detail on BT's own website. If a mobile SIM is essential to how you work, BT's mobile bundle may suit you better; if you want a flexible cloud phone system on the devices you already have, that is where Voxora fits. Voxora prices are per user, per month, excluding VAT.
Can I actually leave BT One Phone?
Know where you stand before you are moved onto a new contract.
Check your contract end date
Your latest BT bill or online account shows the minimum term and end date. If you are past it, you can usually give notice and move with no penalty, even while BT is retiring the service.
What BT can and cannot charge
If you are still in a minimum term, BT may apply an early-termination charge. If you are out of term, it should not. We cannot pay BT's charges, but we can help you understand them so there are no surprises.
Time it so you do not pay twice
We set Voxora up alongside your current service and schedule the number port for a date that works, so you are never paying two providers at once.
Moving from BT One Phone to Voxora
Set up in parallel and tested before anything is cancelled, so callers never notice. Most switches are fully live within a few weeks of starting.
Tell us your numbers, how calls reach you today and your BT contract dates. We plan the build and the port.
Your team install the Voxora app and we test calls while your current service still runs, so there is no leap of faith.
We run the transfer. Porting is free and typically takes around 1 to 3 weeks; some ports take longer, and your old service stays live until the numbers move across.
On the scheduled date your numbers arrive on Voxora and calls keep getting through. Once everything works, we guide you on cancelling BT One Phone.
A platform, not just a number
Voxora is a UK cloud communications platform, so replacing One Phone is also an upgrade. Alongside the phone system you get AI-powered call handling, cloud telephony and business communication tools in one place. The AI Receptionist can answer out of hours using your own information, call queues keep a small team on top of busy spells, and everything is managed from one portal.
Explore the detail: how the phone system fits together, the mobile app and pricing.
Common questions
When is BT One Phone being switched off?
BT is retiring BT One Phone and moving customers off it. Third-party guidance points to a 2026 switch-off, but BT has not published a confirmed date we can cite, so the safe move is to control your own timing and choose a replacement rather than wait to be auto-migrated.
Is Voxora a like-for-like replacement for BT One Phone?
Not exactly, and it is important to be honest about that. BT One Phone was a mobile-first service built around a mobile SIM. Voxora is an app-based cloud phone system: your team use it on the phones they already have, plus desktop and desk phones. If you specifically need mobile SIMs on the mobile network, that is a different type of product. If you need one business number on any device with proper call handling, Voxora does that well.
Can I keep my number when I move from BT One Phone?
Yes. You keep your existing numbers by porting them to Voxora. Porting UK numbers is free and we run the transfer, so your old service stays live until the numbers move across and there is no need to cancel with BT first.
Do I need new phones to replace BT One Phone?
Usually not. Most people just use the Voxora app on the mobile and computer they already own, so there is nothing to buy. If you prefer desk phones, Voxora works with those too. It runs over your internet connection rather than a phone line.
Will BT charge me to leave One Phone?
That depends on your contract. We cannot pay BT charges, but we can help you check your contract end date and time your move so you are not paying two providers at once. As BT is retiring the service, it is worth confirming your position before you are moved onto a new long contract.
How much does Voxora cost compared with BT One Phone?
Voxora is from £6.95 per user per month, excluding VAT, on a monthly rolling basis with no long contract, and pricing is published on our website. BT prices its business services by quote with annual CPI-linked rises, so check your own renewal figures.
Last reviewed July 2026.
Choose your own BT One Phone replacement
Keep your number, use the app on the phones you already have, and move on a plan that suits you rather than the one BT hands you.