Buy a . Budget-friendly examples:
While you cannot change the network technology from 3G to 4G, you can perform general firmware updates to improve stability: How to Update ZTE MF65M Firmware zte mf65m upgrade to 4g
This voids warranties and can permanently damage the device if done incorrectly. It cannot be upgraded to 4G LTE via
The ZTE MF65M is a 3G only mobile hotspot (max 21-42 Mbps on DC-HSPA+). It cannot be upgraded to 4G LTE via software, firmware, or SIM changes. The hardware lacks a 4G modem. The device's hardware is physically limited to HSPA+
The is a 3G-only mobile hotspot and cannot be upgraded to 4G LTE via software or firmware updates. The device's hardware is physically limited to HSPA+ speeds, which reach a maximum of 21.6 Mbps download and 5.76 Mbps upload.
In 2022–2025, major carriers (including AT&T, Verizon, T-Mobile, Telstra, Optus, and Vodafone) have shut down or are shutting down 3G networks. Some older MF65M units, when they fail to register on a new 4G band, default to 3G—but if 3G is gone, they lose data entirely. An “upgrade” here means updating the firmware to force 4G-only mode.
To clarify, it is not possible to upgrade a device from 3G to 4G via software alone. The hardware in the