Reading novels on mobile phones was generally free, but some platforms or applications might require payment. The specific charging method may vary depending on the platform or application. Some platforms or applications may provide free novels but some novels require payment to watch. Others may provide free novels but some novels require payment to watch. It is worth noting that some novels may contain advertisements or trial content, which may affect the cost of watching the complete novel. Therefore, it is recommended to check the payment status of the novel before purchasing it to avoid unnecessary expenses.