When a friend borrows money online, he leaves his customer's phone number. When a friend fails to repay the loan, the customer will receive relevant collection information. Lending institutions can call the parties to inform the lender of overdue information, and hope that the parties will cooperate with the lending institutions to urge the lender to repay.

legal ground

Article 667 of the Civil Code is a loan contract in which the borrower borrows money from the lender, repays the loan at maturity and pays interest. Article 668 of the Civil Code provides that a loan contract shall be in written form, unless otherwise agreed between natural persons. The contents of a loan contract generally include terms such as loan type, currency, purpose, amount, interest rate, term and repayment method.