A Mac can run Starlink and a 4G/5G USB cellular dongle at the same time, so the dongle’s cellular connection covers for Starlink when it slows down or drops.
Speedify is an app that combines two or more internet connections at once, such as Starlink and a cellular connection, so you get faster uploads and downloads and stay online if one connection drops. Speedify needs the dongle connected for that: on Starlink alone, it works as an encrypted VPN and cannot stop Starlink from dropping.
This guide shows how to combine Starlink with a 4G/5G USB cellular dongle (also called a cellular adapter) on macOS using Speedify.
Note: Combine internet connections from different sources. Connecting to the same router over both Wi-Fi and Ethernet does not add speed, because both share one internet connection.
3 Steps to Join Starlink Internet and a Cellular Adapter on a Mac
Step 1: Connect to Your Starlink Wi-Fi Hotspot
First, set up your Starlink with the instructions that came in the box. This includes your Starlink Wi-Fi network name and password.
On your Mac, click the Wi-Fi icon in the menu bar and turn Wi-Fi on if it is off. Choose your Starlink Wi-Fi network and enter its password to connect.
Step 2: Connect the USB Cellular Adapter to Your Mac
Connect your USB cellular adapter to a USB port on your Mac. Some cellular adapters need the manufacturer's dialer app to connect to the internet, so follow the manufacturer's installation and setup instructions.
To confirm the connection, open System Settings > Network (System Preferences > Network on macOS 12 Monterey or earlier) and look for the adapter in the list.
Step 3: Download and Install Speedify
Download and install Speedify. Speedify is an app that combines your Starlink with the other internet connections on your device, so your internet is faster, more reliable, and more secure.
Once running, Speedify finds your internet connections on its own and splits your traffic across them. If Starlink drops, Speedify moves your traffic to the internet connections that still work. Video calls and live streams get priority over background downloads and updates.
To see how each internet connection is doing, or to set a data limit on one, click or tap it in Speedify.
Speedify's cellular sharing adds more 4G/5G cellular: phones and computers running Speedify on the same local network share their 4G/5G cellular with each other.
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