Technically you can get unsecured loans e.g. on a credit card, maybe that's what the OP means, but it still relies on the bank KYCing you up the wazoo, knowing your credit rating, etc.
Technically it's not unsecured (you sign a contract when you apply for a credit card) neither a loan (by the true meaning of the term), since the bank has the right to get its money in full from any asset that you might have. It's a trick to "give money" at a higher interest rate because cards have a bigger interest than loans. So upgrading your limits is not a loan.
Who is surprised that the house bitches Vod and Condoras have to spam here again?