Unable to phone landline from SMARTY mobile

[AndyK2]

At the start of this month, I changed my mobile provider from O2 to SMARTY, and have since been unable to connect with my home Sky landline, instead hearing the message: "The number you have dialled cannot accept this call. Please hang up and try again later". Calls in the other direction work fine.

We have checked with a neighbour who also has a SMARTY SIM, and they receive the same message when phoning our landline, so the problem is not with my mobile phone or its number.

Is this an issue others have had or is there a specific fault on my Sky landline (which is able to receive mobile calls from other mobile networks including O2 and Sky)?

[caesarome]

I think to start with it is worth calling Sky so it can be investigated from their end. 150 from your landline phone number is the free number to use.

[AndyK2]

Thanks - I tried that but they couldn't find anything wrong, and suggested I contact SMARTY - but I'll try them again.

[AndyK2]

So I spoke to Sky - apparently there's nothing wrong with my landline (VoIP via modem) and I should speak to SMARTY. Who don't think there's anything wrong with their SIM / mobile service, as I am able to make calls to other "020" landlines. Don't really know where to go from here! - would be nice to get SMARTY and Sky to sort it out between them, but I don't know how to make that happen. Any ideas?

[Jai_Sky]

September 2025, the problem is still not resolved. Just got Sky Max BB and also changed to Smarty mobile, and ever since then I have not been able to call my landline. Neither can my sister or son get me on the landline.... And they too are on Smarty mobile. I have escalated this to both Sky and Smarty in the hope that it is finally resolved for all their customers... And the utilities, both mobile and broadband VoIP, are fully functional. I have dual SIM, and in transit to move from old GiffGaff number to Smarty, and while I can call out from GiffGaff to my Sky landline, I can't if I call out from Smarty mobile to Sky landline. Others on O2 and Lebara are also coming through, so the problem is between Sky and Smarty. Hopefully this is helpful m

[Mark319]

I've recently had the same problem. My wife's and my mobile are with Smarty and can't make calls to our home landline phone but can to other landlines. Our daughter uses a different mobile vendor and can call our home landline so the problem does point to an issue with Sky and Smarty. The Sky technician checked our connection and Openreach but found no faults.

[Jai_Sky]

Thank you Mark 

I have escalated the 'complaint' to both Sky and Smarty and suggested that they put their combined effort to resolve this issue.

As, I believe that it's an issue with three mobile and sky VoIP. 

Smarty is that virtual network piggybacking on the three.

Both smarty and sky have strong advertising campaigns running but they need to sort this out.

And I hope more people escalate their issues.... 

Yes... We are not that reliant on landline but it's vital for some of us.

[AndyK2]

I never managed to get the issue sorted out. Partly because of this, but mostly due to Sky's price rises, I moved from Sky to EE for my broadband/TV - my SMARTY mobile now has no problems phoning my landline. Further evidence that it is a joint Sky/SMARTY issue.