https://community.o2.co.uk/t5/Pay-Monthly/Unknown-number/m-p/1601472#M254174 <P><a href="https://community.o2.co.uk/t5/user/viewprofilepage/user-id/5084467">@Jonnye</a>&nbsp;</P><P>O2 don't write numbers to sim cards so you have to enter it manually into any apps that need your phone number.</P><P>If it's an iPhone it's in Settings &gt;Phone &gt;My Number.</P><P>For Android you need to enter number in the message app under RCS or chat settings.</P> Tue, 07 Feb 2023 21:06:59 GMT MI5 2023-02-07T21:06:59Z https://community.o2.co.uk/t5/Pay-Monthly/Unknown-number/m-p/1601471#M254173 <P>Just swapped from virgin mobile to 02 and kept my old number,but new SIM says my number is unknown,can anyone help with this please</P><P>&nbsp;</P> Tue, 07 Feb 2023 21:04:16 GMT https://community.o2.co.uk/t5/Pay-Monthly/Unknown-number/m-p/1601471#M254173 Jonnye 2023-02-07T21:04:16Z https://community.o2.co.uk/t5/Pay-Monthly/Unknown-number/m-p/1601472#M254174 <P><a href="https://community.o2.co.uk/t5/user/viewprofilepage/user-id/5084467">@Jonnye</a>&nbsp;</P><P>O2 don't write numbers to sim cards so you have to enter it manually into any apps that need your phone number.</P><P>If it's an iPhone it's in Settings &gt;Phone &gt;My Number.</P><P>For Android you need to enter number in the message app under RCS or chat settings.</P> Tue, 07 Feb 2023 21:06:59 GMT https://community.o2.co.uk/t5/Pay-Monthly/Unknown-number/m-p/1601472#M254174 MI5 2023-02-07T21:06:59Z