Not all contact apps show the phones number. You should, however, be able to find it by going into "Settings" and then "About Phone". In here tap "Status" and if you scroll down you should see it under "My Phone Number".
Not all contact apps show the phones number. You should, however, be able to find it by going into "Settings" and then "About Phone". In here tap "Status" and if you scroll down you should see it under "My Phone Number".