Sim showing old number

[Yuvan]

My iphone is showing old number as already sky send me notification that your number is port and my phone calls and text going on the port number but why my iPhone is showing old number

[63johnw]

Hi @Yuvan  try this. 

Go to sky.com/networksettings (My Account > Mobile > Settings) and sign in with your Sky iD.
Select the mobile number or SIM name you're having trouble with.
Scroll to 'Resend network settings' and select Request settings.
Save the settings when your receive them and reboot your phone.