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How to change the APN setting on your MiFi device
Huawei E583 Insert the SIM card Connect the MiFi to your PC using the USB cable Allow the '3 WiFi manager' to install (first time use only) Open '3 WiFi Manager' and select 'Tools' > 'Options' > 'Profile Management' > 'New' Configure the APN settings and Dial Up number for the mobile operator you want to use. Select 'Default' for the APN settings that you want the MiFi to use.