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The ZTE MF65 is designed as a mobile hotspot with a maximum download speed of 21.6 Mbps . Because 4G LTE requires different physical internal components (antennas and chipsets), no "free upgrade" software can enable 4G connectivity on this specific model. Some carrier-branded versions may display a "4G" icon in their dashboard, but this often refers to HSPA+ (3.5G) rather than true LTE. How to Update Your ZTE MF65 Firmware

However, you can optimize your device's performance, unlock it for other carriers, and ensure you have the latest firmware for the best possible 3G speeds.

While many users search for a way to upgrade the , it is important to clarify that this device is hardware-limited to 3G HSPA+ speeds . A software update cannot physically change the 3G internal modem into a 4G LTE-capable one.

If you want to use a different SIM card to get better coverage, you can "openline" or unlock the device. This is often what users mean by "upgrading" their service: Unlocking ZTE MF65 Modem Guide | PDF - Scribd

: Go to Settings > Device Settings > Update Management (or Software Updates ). Check for Updates : Click the Check or Check Now button.