Phone verification is presently used by Discord as an anti-abuse feature. For further protection, private servers can impose a phone verification requirement.
When attempting to finish your verification, if you see the notice "Invalid Phone Number," it can be because of one of the following:
● Landline, VOIP, and Burner/Prepaid numbers cannot be utilized to complete the verification process. To verify, you must enter a mobile number.
● The text entry area is not correctly filled out by you. Make sure to choose the appropriate country code for your phone number.
● Have a second account or assist a friend in finishing their verification? Your phone is timed out and has just been registered. Unfortunately, Discord is unable to reverse this, therefore you will either need to wait until the timeout is through before using the number again or use a different number to verify the account.