− | You must upgrade the affected devices (table below) to the latest firmware before '''February 22nd, 2022''', to avoid service interruptions on AT&T 4G network. | + | You must upgrade the affected devices (table below) to the latest firmware before '''February 22nd, 2022''', to avoid cellular service issues on AT&T 4G network. Failing to execute the following action will leave your devices unable to use mobile data connection. |