How to Combine ADSL and 4G/5G Cellular for Faster Upload and Download Speeds with Speedify

ADSL and 4G/5G Bonding – No Need for Dedicated Router

Need a faster ADSL connection? Don’t have access to any other form of broadband Internet that is faster (cable, fiber)? Then we recommend using your mobile phone’s 4G LTE / 5G cellular data connection together with your existing ADSL. This will get you a faster and more secure Internet connection when you need it.

Read below our easy step-by-step guide to combine an ADSL Internet connection with a 4G LTE / 5G cellular connection on your Windows PC or Mac computer. We are using Speedify, a bonding VPN that can combine two or more connections together.

Quick answer

Should you have a backup 4G, 5G, Starlink, or cable internet connection?

Yes — every internet connection goes down, including Starlink, which drops for ~34 minutes a day on average. A backup connection from a different provider means one outage never takes you fully offline. The most common options are a 4G/5G cellular hotspot, a cable or DSL line, or a second satellite dish.

Speedify bonds any two connections into one — automatic failover, more speed, no dropped calls.

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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.

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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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Combining ADSL and 4G LTE / 5G for Speed, Stability and Security.

Living in remote areas “in the middle of nowhere”, as some might say? Or, sadly enough, don’t you have other alternatives to your ADSL Internet connection where you’re located? You can still make the best of it and use your phone’s Internet link together with your existing ADSL line. It’s very easy to combine them with our Speedify software app.

Requirements

  • A subscription of Speedify bonding VPN. Speedify can be used on both Windows and macOS computers, as well as Android, iOS and Linux.
  • A 4G LTE / 5G connection – this may be your mobile phone or a USB cellular dongle.

6 Steps to Combine ADSL and 4G LTE / 5G into a Fast, Stable and Secure Internet Connection

Here’s what you have to do:

  1. Make sure you’re connected to your ADSL Internet, either via wired Ethernet or Wi-Fi. For best results, we recommend using the wired Ethernet connection, as Wi-Fi signal is variable.
  2. Setup your 4G LTE / 5G cellular connection: either tether your smartphone via USB or connect a USB cellular adapter. See instructions below on tethering:
  3. Start Speedify and log in using your subscription credentials. Speedify will detect your active ADSL and 4G LTE / 5G Internet connections and show them on the screen.
  4. Choose a server for Speedify to connect to and combine the DSL Internet link with your tethered phone connection. By default, Speedify will connect to the fastest server, but you can choose a specific location as well, if you need to unblock restricted content.
  5. Set the 4G LTE / 5G cellular connection on a Secondary priority and specify a daily or monthly data cap. You don’t want to exceed your quota and pay more, so Speedify will just cut the use of the tethered phone data connection once you’re done for the day / month.
    However, if you have an unlimited data plan, feel free to set the 4G LTE / 5G cellular connection priority as “Primary”.
  6. Enjoy faster Internet with Speedify, as it combines your ADSL Internet link with your 4G LTE / 5G cellular connection for their aggregated bandwidth and speed. When both symbols light up in the Speedify interface, that means they’re connected and online, and Speedify is bonding the two.

With Speedify You Don’t Sacrifice Speed for Security. You Get Both.

Speedify is more than just a way to use and manage multiple ADSL and 4G LTE / 5G cellular Internet connections to get faster Internet on your computer. It is also a bonding VPN designed for speed, so it won’t slow your device down. Speedify encrypts all of your data and protects you from the dangers of using an unsecured public WiFi network.

Speedify is also available for mobile devices such as iPhone, iPad, Android smartphones and tablets. You can even use Speedify on Linux devices.

Plus, Speedify is an anonymous no log VPN service, so that you can stay with peace of mind that your data is safe and won’t be sold to other companies for money.

Speedify is not only the easiest way to improve your device’s Internet connectivity. It is also the best way to make your device more secure. Speedify has packed all of this industry-leading technology into one simple app that anyone can use.

What are you waiting for? If you’re in need for faster ADSL Internet, then it’s time to move forward and use it together with a 4G LTE / 5G cellular connection your computer. Get started with Speedify today!

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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.

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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

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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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