samsung t139 after 3G

It is 2G (2010) and although working as of April 2022 evidently will stop at some point.  It was used only for emergencies.  Think of the millions of older users who may suffer harm as a result of phone carriers stoping support for anything less than 4G+. Not to mention these same carriers continued to charge service for devices they knew would no longer be supported.  I understand prepaid plan balances can be transferred to new phones ( at least with ATT) but legacy plans may not carry over.  Class action suit anyone?  Thank you for your response. Nothing more need be said.