How to Combine Starlink with a 4G/5G Cellular Adapter on a Mac with Speedify

Increase Throughput and Lower Latency on macOS by Combining Starlink with a 4G/5G USB dongle

You may ask yourself why use two Internet sources at the same time, like Starlink and a cellular connection. The benefits of doing this with a channel bonding app like Speedify include getting a faster, more stable and secure Internet.

In this guide you will learn how to use your Starlink satellite Internet via Wi-Fi together with a cellular connection for better Internet.

You can get a secondary Internet connection via the same or a different ISP.  Examples include another Starlink, DSL, cable, or cellular connections. Speedify can bond your Starlink satellite connection with any number or combination of other Internet connections and will intelligently distribute your online traffic among them for optimal performance. Plus, if you get disconnected from Starlink in the middle of an important video call or file transfer, Speedify will seamlessly failover to your other working Internet connection(s) without skipping a beat.

NOTE: For best results, use Internet connections from different sources. In general, joining the same upstream network multiple times (such as the same router via Ethernet and Wi-Fi) will not improve performance.

Quick answer

Should you get a backup connection for Starlink?

Yes. Starlink goes down every day — an always-on dish averages about 34 minutes of downtime daily from routine satellite handoffs. A second connection keeps you online when Starlink drops.

What’s the best backup connection for Starlink?

A 4G/5G cellular hotspot or SIM is the most practical backup for most Starlink users — it works anywhere Starlink works, requires no installation, and uses a different network so outages rarely overlap. Cable or DSL broadband is a strong option if you have it at a fixed location. A second Starlink dish is also possible if you need maximum throughput.

How do you use two internet connections at once with Starlink?

Speedify combines Starlink with any other connection — cellular, cable, Wi-Fi, or a second dish — into one bonded connection. Speedify runs on your phone, laptop, or router. When Starlink drops, Speedify moves your traffic to the backup instantly, so calls don’t cut out and downloads don’t stall. Speedify is free to try.

71% of Speedify’s Starlink users already run a second connection. The data below shows why.

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Speedify Starlink Index — real-world performance from 6,209 Starlink users: 2.4% downtime, about 34 minutes a day for always-on connections

Speedify Starlink Index
May 28 – Jun 10, 2026 · 14-day window

Starlink goes down every day.
Here’s what that actually looks like.

Speedify passively monitors every connection it bonds. These figures come from 6,209 Starlink users over 14 days — compared in real time against the other connections on the same devices. No speed tests, no lab conditions.

Median latency

60 ms

p90 spikes to 257 ms

Avg packet loss

0.17%

vs 0.08% on T-Mobile

Jitter measures how much latency varies moment to moment — high jitter causes choppy calls and frozen video even when average latency looks fine.
Starlink28.1 ms
Comcast22.4 ms
T-Mobile15.9 ms
Verizon14.9 ms
AT&T11.3 ms
71%
of users

71% ran at least one other connection simultaneously — 4,381 of 6,209 users. Cellular is the most common backup.

Cellular 51% Cable / DSL 38% Corporate 11%
6,209 users · 144 countries · 1.26M records · passive measurement, aggregates only Full dataset →

Use Speedify to stay online during satellite handoffs every 15 seconds

Research confirms Starlink switches between satellites every 15 seconds on a fixed schedule.  Each satellite handoff is a potential dropout, and on a congested network or with any obstruction, those Starlink dropouts become real interruptions.

Speedify fixes Starlink connection drops by combining your Starlink internet connection with another satellite dish, Wi-Fi, 4G/5G cellular, or wired Ethernet at the same time. When Starlink drops, Speedify keeps your traffic moving on the backup internet connection instantly. 

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Speedify alerts you about your Starlink dish status

Speedify software alerts you about your Starlink dish status as soon as your dish experiences an issue - e.g. when your actuator motor is stuck, the mast is not vertical or there's a thermal throttle. 

Speedify's Starlink Control Center helps you monitor all your Starlink dishes, read obstruction maps, and align multiple dishes all in the Speedify app. Get a real-time view of each dish's health and optimize the position of each Starlink dish, so you get the best possible performance out of your Starlink connections. 

Speedify

Speedify gives you faster, steadier internet by combining Wi-Fi, cellular, and Starlink

Speedify bonds Wi-Fi, 4G/5G cellular, Ethernet, and Starlink into one connection at the same time, giving you more speed, automatic failover when one drops, and AES-256 encryption on every link.

Download Speedify ›

More speed

Upload and download speeds combine across every active connection on your device.

🔄

Automatic failover

If a connection drops, Speedify moves your traffic to another in milliseconds. Calls stay connected.

🔒

Always encrypted

Every link runs through an encrypted tunnel, including public Wi-Fi, cellular, and Starlink.

Speedify Feature · Pair & Share

Speedify Pair & Share: share cellular between your devices, both ways

Most hotspots give. Speedify's Pair & Share gives and takes. Two devices running Speedify pair up and each uses the other's cellular connection simultaneously, so you both get faster uploads, faster downloads, and a steadier connection. No extra hardware, no new data plans, no setup beyond a tap.

Learn how Speedify's Pair & Share works ›

More speed

Every device you pair with adds its cellular to yours, and yours to theirs.

📱

Stays connected

If a paired device drops out, Speedify keeps you online on the remaining links.

🔒

Always private

Every shared connection runs through AES-256 encryption. Your traffic is yours.

🎉

No new gear

Runs on devices already running Speedify, over your local network. Pair once, reconnects automatically.

How do I use Wi-Fi and 4G/5G cellular at the same time with Speedify?

Pick your two internet connections and your device below and we'll take you to the step-by-step setup guide.

I want to combine

Use the selectors below to find the setup guide for your exact combination of connections.

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15M+ downloads worldwide · 75K+ five-star reviews · 500TB+ bonded per week

3 Steps to Combine Starlink Internet and a Cellular Adapter on a Mac

Step 1: Connect to Your Starlink Wi-Fi Hotspot

First - make sure you setup your Starlink according to the instructions you received in the package. This includes setting up your new Starlink Wi-Fi network, along with your password.

Click the Wi-Fi icon in the menu bar. (If Wi-Fi is off, choose "Turn Wi-Fi on.") Select the Wi-Fi hotspot associated with your Starlink connection and enter the password to connect.

Need help with this step? Visit Apple’s knowledge base to learn more.

Step 2: Connect the USB Cellular Adapter to Your Mac

Connect your Cellular Adapter to a USB port on your Mac. Some Cellular adapters require the use of proprietary dialer software to connect to the Internet. Be sure to follow the manufacturer's installation and operating instructions closely.

To confirm your connection status, visit System Preferences, click Network, and look for your new adapter in the list on the left.

Step 3: Download and Install Speedify

Last but certainly not least, download and install Speedify. Once running, Speedify will automatically detect your Starlink connection and any other available Internet connections and combine them for increased speed, security, and stability.

Need to keep several devices connected in areas with limited or spotty network coverage, like event venues, remote locations or when traveling? Get consistent and uninterrupted online activity for all your devices using Speedify's Pair & Share functionality, which allows you to share cellular data between multiple devices wirelessly.

By pairing devices, you can effectively distribute your cellular connection across them, improving overall performance, especially when other network options like Wi-Fi may be slow or unstable.

You can manage settings, view statistics, and even apply limits to individual connections by either clicking/tapping on them from the Dashboard or by navigating to the desired connection through the main Settings menu.

Speedify will work quietly in the background to optimize performance including prioritizing streaming web traffic to avoid stuttering, buffering and disconnects.

When using Starlink Internet, Speedify is the only VPN that makes your online experiences faster, more reliable, and more secure.

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Get started with Speedify today!

With Speedify you can combine Wi-Fi, 4G / 5G cellular, Ethernet, Starlink and other satellites into one bonded super-connection to improve livestreaming, video calling, gaming, web browsing, and everything else you do online.

Download Speedify
Download Speedify on the Apple App StoreGet Speedify on the Google Play Store

Speed

Get faster uploads and downloads for everything you do online.

Stability

Avoid buffering and disconnects while streaming, gaming, and browsing.

Security

Keep your personal data safe from hackers, snoops and cyber criminals

Speedify engineers love talking tech on YouTube, Tiktok, and Instagram!

Alex Gizis and the Speedify engineers discuss and explain technology including Starlink satellites, Wi-Fi 7 routers, Apple networking features, fiber optics, broadband internet, 5G mobile networks, AI, networking protocols, and much more. Follow Speedify on YouTube, TikTok, Instagram, and LinkedIn!

Alex and the Speedify team are always exploring the latest in networking and security technology—like 5G, 6G, WiFi 7, laser and satellite internet—and sharing it in new discussion content across YouTube, TikTok, Instagram, and LinkedIn every week.

Got a tech question? Let's go deeper! Pop into Speedify Office Hours live every Wednesday at 10 AM Eastern. Speedify CEO Alex Gizis and our network engineers are standing by to break down your questions about networks, tech updates, and Speedify features.

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