Linphone is just a SIP client. This is an issue with whatever service you were registered with - which you don't mention. Normally, when registering with a new SIP to PoTS service, you can ask to "port" your phone number to the new service. This takes a few days.
However, when you say "deleted the account", perhaps you only mean you deleted the local config for that account on the Linphone app. In that case, the account is still active at whatever service you had configured - all you've done is delete the local login and SIP info. You will need to go to their web page to make any changes.
On Wed, Oct 24, 2018 at 6:36 AM, Andrey Novikov <address@hidden> wrote:
Good day! I deleted the account, I want to register a new one with the same phone number,!
but I cannot, because it says that the phone is in use, although the account has been deleted. What to do?