Jaga Pulsa/Jaga Tagihan are MyTelkomsel App features to avoid your credit being consumed or your bills being overcharged for non-package internet access. In other words, when a customer is not subscribed to an internet package or runs out of internet quota, the customer's credit will not be used for internet access.
Jaga Pulsa is a feature designed for Telkomsel PraBayar (prepaid) customers and Jaga Tagihan is a feature designed for Telkomsel Halo (postpaid) customers.