Scroll down and look for an option like "About phone", "About device", or "System". Tap on it.
Within "About phone," look for "Status", "SIM status", or "Phone identity".
Tap on the relevant option. You should see albania phone number list your phone number listed under "My phone number," "Phone number," or "SIM slot 1 number" (if you have a single SIM) or for each SIM slot if you have a dual-SIM Vivo phone.
Variations you might see on Vivo phones:
Some Vivo models might have it directly under "Network & internet" > "SIM cards & mobile networks". Tap on the SIM card (SIM 1 or SIM 2) and your number might be displayed there.
Older Vivo phones might have it under Settings > Phone > Caller ID or similar.
Sometimes your own number is saved as a contact on your phone:
Open the Contacts app.
Look for an entry named "Me", "My info", or your own name at the very top of the contact list. Tap on it.