BT One Phone Customers
Has your service been switched off?
Our Mobile+ offering provides a like-for-like mobile UCaaS service built the same way — so your business voice service can continue with minimal disruption.
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We maintain continuity on the network you already trust.
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Built around the way your teams
already work
Mobile+ SIM
Business calling features built directly into a physical SIM - no additional equipment required.
Mobile+ eSIM
Business calling features built into an eSIM for compatible devices - no physical SIM swap needed.
Mobile+ App
Access your business phone system through the Mobile+ app where a SIM change isn’t required.
Softphone
Make and receive calls from your laptop or computer using a simple softphone app.
Desk phone
Integrates with most desk phones supplied by BT. It should be possible for us to switch your phone without physical interaction.
For SIM and eSIM users, calls are made through your phone’s native dialler - not a separate calling app – so the experience stays familiar.
What happens Next
Your switchover journey
Understand your current setup
Feature parity agreed
You approve before anything proceeds
Move a small group first, then roll out
+ activation
+ go-live
Managed end-to-end
Frequently Asked Questions
I’ve never heard of PiPcall?
Will my numbers transfer?
How long will it take?
Will it cost more?
What if something goes wrong?
Can I keep my existing phones?
What happens if I do nothing?
Will my users need retraining?
Do I need new SIMs?
Start your switchover and track progress online
- No-obligation enquiry — submitting the form doesn’t change your service
- Clear step-by-step status — see what’s happening and what’s next
- One place for updates — your contact, timeline and next actions
