Engaged tone

[margo43]

Why does my friend get the engaged tone when she rings my mobile but everyone else can get through

[AnnS]

Check your number blocked list from your call settings  @margo43 , it's  surprising just how easy it is to accidentally add a number to the list of  blocked  numbers. 

[margo43]

Thank you for responding,  Just found out  after sitting here for hours trying to fix my phone EE are having problems connecting to Vodafone