u/kaizzerst

Hi everyone,

New to the sub and looking for some technical advice.

I’m currently working from Portugal and I’ve been using my Three UK mobile number for daily work calls to the UK. As expected, Three just sent me a warning that they will suspend my roaming services on the 17th due to their Fair Usage Policy.

I need to keep this exact number for professional reasons, and I’m considering porting it to a VoIP provider so I can stop worrying about roaming rules and just use it via an app on my phone (using my local Portuguese data/Wi-Fi).

I have a few specific questions:

1. Reliability: For those who have ported a UK mobile number to a VoIP service (like Zadarma, Virtual Landline, or VoIPfone), how is the call quality for daily professional use?
2. SMS: My biggest concern is 2FA/Bank codes. Which VoIP providers actually support receiving automated SMS/OTP from UK banks?
3. Alternative: Is there a better "virtual" eSIM or service that allows permanent overseas use without the 60-day limit?

I have a stable fiber connection at home and a local SIM for mobile data, so I'm just looking for the most stable way