In your profile, any information you have ever provided is stored. The phone number linked to your account. Your full name and other personal details you provided for transferring money or verification purposes. The email address to which all the notifications about your transfers and verifications are sent (if you opt to undergo the latter to increase your transfer limit).
If you need to send more, you can confirm your identity, your home address end your income in your profile at any time.
If you have already confirmed your identity or home address and would like to update the details in your user profile, you will have to undergo the verification procedure again.