What is the ruling on transferring balance from one phone to another with a commission, and does this fall under the sale of money for money, or a stopped sale, or the sale of what is not in one's possession, knowing that I charge my phone with balance and then transfer it with a quarter Dinar as commission?

Transferring credit from one mobile phone to another for a specified amount is not usury (riba). Rather, it falls under the category of selling benefits for cash, and it is permissible for any price agreed upon by both parties, even if it exceeds the value of the credit. This is because the increase is not in exchange for the transfer itself, but rather it is part of the agreed-upon price.