User testimony (DSLReports forum, 2021): “My H2640 used to die every time I launched Steam. After the 2021 update, I forgot the router existed for five months.”
The is a popular outdoor fixed wireless terminal (FWT) or LTE CPE (Customer Premises Equipment), widely deployed in regions such as Southeast Asia, Eastern Europe, the Middle East, and Africa. It is designed to convert 4G LTE signals into Wi-Fi and Ethernet connectivity for homes and small businesses. Like any network device, its performance, security, and feature set depend heavily on its firmware. zte h2640 firmware 2021