cannot be upgraded to 4G through software alone because its physical radio receiver is not designed to pick up 4G frequencies 1. Hardware Upgrade (The Netsetter)

Documenting the bottlenecks in existing 3G hardware, such as Analog-to-Digital Converter (ADC) speeds and antenna bandwidth constraints. 3. Network Migration and Site Reusability

: Unlike 3G dongles that typically only provide internet to the laptop they are plugged into, 4G upgrades support up to 10 simultaneous devices (smartphones, tablets, Smart TVs) via Wi-Fi.

The most critical thing to know is that .