https://helpforum.sky.com/t5/Sky-Mobile/Number-not-in-use/m-p/5200393#M283875 On several occasions, I've been told I've had people try to call me &amp; it'll say "this number is not in use". Why is this happening? It's so sporadic &amp; I don't know when it happens until later on when someone calls my landline. So other than switching it off/on, or on Aeroplane mode, this doesn't seem to fix the problem &amp; who knows how many calls I've missed. Wed, 28 Jan 2026 16:17:42 GMT Lisa_- 2026-01-28T16:17:42Z https://helpforum.sky.com/t5/Sky-Mobile/Number-not-in-use/m-p/5200393#M283875 On several occasions, I've been told I've had people try to call me &amp; it'll say "this number is not in use". Why is this happening? It's so sporadic &amp; I don't know when it happens until later on when someone calls my landline. So other than switching it off/on, or on Aeroplane mode, this doesn't seem to fix the problem &amp; who knows how many calls I've missed. Wed, 28 Jan 2026 16:17:42 GMT https://helpforum.sky.com/t5/Sky-Mobile/Number-not-in-use/m-p/5200393#M283875 Lisa_- 2026-01-28T16:17:42Z https://helpforum.sky.com/t5/Sky-Mobile/Number-not-in-use/m-p/5200401#M283876 <P><a href="https://helpforum.sky.com/t5/user/viewprofilepage/user-id/4602557">@Lisa_-</a>&nbsp;</P> <P>If you can make calls ok without any issues you might want to report this to Sky by calling them on 150 and they might want to send you a replacement sim to try if you are using one and not an eSIM.</P> Wed, 28 Jan 2026 16:26:05 GMT https://helpforum.sky.com/t5/Sky-Mobile/Number-not-in-use/m-p/5200401#M283876 caesarome 2026-01-28T16:26:05Z