Talk:Brazil/@comment-201.202.31.98-20181001221749/@comment-34630191-20181002231152

In fact, the answer is not unique. Legally, the operator may cancel the number 60 days after the credit expiration date. However, there is no standard and many SIM cards from different carriers remain active for many months. It is more common for operators to cancel the numbers in the last months of the year since the number of active mobile lines in December is used as a reference for operators to pay an annual fee to "Fundo de Inspeção de Telecomunicações" (Fistel).

You can access the mobile app or client's area on the website to verify if it remains active. Or if you have the opportunity, you can test if your SIM card still receives the signal from your Brazilian mobile provider (when arriving in Brazil).

If it is positive, you can make a top-up and use your prepaid. Usually, the operator sends a message (SMS) soon after obtaining the signal informing an end date to insert credits before having the line canceled.