Digital Signage Internet: Speedify Combines Wired Broadband and 4G/5G Cellular to Keep Screens Online

Reliable Internet for Digital Signage Networks Starts With Redundant Connections

A blank screen at a mall entrance or a frozen menu board at a drive-thru sends the wrong message before a single ad ever plays. Digital signage networks depend on a steady stream of content updates, and when one internet connection drops for even a few seconds, a screen either freezes on stale creative or goes dark entirely. Most digital signage deployments still run on a single wired line per location, so one outage, one loose cable, or one ISP hiccup takes the whole screen offline until someone notices.

Speedify solves this by combining every available internet connection at a signage location into one resilient connection. Speedify’s technology for combining internet connections uses Wi-Fi, 4G/5G cellular, Ethernet, Starlink and other satellite connections at the same time; Speedify’s published figure is up to 95% of their combined capacity, and traffic moves around any connection that stalls. That needs at least two internet connections at the location; on a single connection Speedify works as an encrypted VPN and cannot stop that connection from dropping.

Speedify bonds your premises' internetconnections, with no dedicated hardware Wi-FiActiveOffline EthernetActive CellularActive StarlinkActive SPEEDIFY ENCRYPTED YOUR PREMISES ONLINE Video calls Cloud files Point of sale Locations EVERY INTERNET CONNECTION, ALL AT ONCEONE INTERNET CONNECTION FAILS FASTER UPLOADS AND DOWNLOADSYOUR PREMISES STAY ONLINE ONE INTERNET CONNECTIONFails YOUR PREMISESStay online DEDICATED HARDWARENone needed INTERNET CONNECTIONSAll at once

Watch now

How Speedify combines internet connections on any hardware

A walkthrough of the protocol, the per-packet distribution model, the failover logic and the encryption layer in one detailed explainer, plus the architecture and engineering tradeoffs that make Speedify different from a load balancer or a regular VPN.

Get started with Speedify for your business

Speedify offers three commercial paths. They work together, and most enterprise customers use two or more.

01

Speedify Teams

Faster, more reliable internet for everyone in your business, managed from one dashboard.

Speedify on every supported OS for every team member


Centralized dashboard for billing, user provisioning, and usage analytics


CSV import/export and a RESTful management API

View plans →

02

Speedify for Routers

Run Speedify on hardware you already own, or buy a Powered by Speedify router with it preinstalled.

License for supported OpenWrt routers


Powered by Speedify hardware lineup ready to deploy out of the box


Miri, GL.iNet and other partner models


Covers every device on the network, with no per-device install

View plans →

03

Embed Speedify into your product

Add Speedify's ability to combine internet connections to your own product. For OEMs, software vendors and hardware manufacturers that ship connectivity as a feature of their own product line.

A · DIY

Build it yourself with the Speedify SDK.

Integrate Speedify into your iOS, Android, Windows, macOS, Linux or QNX product. Full developer documentation, sample code and supported integration paths. Your team owns the build, and the Speedify SDK handles combining the internet connections.

Developer Docs →

B · CUSTOM ENGINEERING

Have the Speedify team build it for you.

The Speedify engineering team delivers custom integration work, deployment architecture and protocol-level customization, built to your spec and your timeline by the people who built Speedify.
Contact Us →

Why Signage Screens Go Blank: Connectivity Blips

Digital signage networks rarely fail dramatically. The causes are usually small and easy to miss until a screen is already dark:

  • Single point of failure. One Ethernet drop or ISP outage takes the screen offline with no second connection in place.
  • Congested shared Wi-Fi. Screens sharing bandwidth with guest network traffic buffer or freeze during peak hours.
  • Silent packet loss. A degraded line keeps passing some traffic while dropping just enough packets to corrupt a content sync, leaving a blank or outdated frame.
  • Weak signal at remote sites. Rural billboards and drive-thru lanes often sit at the edge of cellular coverage, where a single carrier connection cannot be trusted on its own.

Combining Wired and 4G/5G Cellular for Displays That Stay On

Speedify treats every network path as an asset rather than a single point of failure. At each display location, Speedify combines the Ethernet drop with a 4G/5G cellular connection, so if the wired line drops, cellular is already carrying traffic, with failover in milliseconds, according to Speedify.

For multi-location retail chains and digital-out-of-home networks, Speedify’s enterprise solution for combining connections extends this same approach across dozens or hundreds of screens, each with its own combined connection, with users and usage statistics in the Speedify Teams Dashboard.

Sites that pair cellular with satellite backhaul benefit from the same approach used when combining Starlink and 5G for business connectivity, giving a signage network two genuinely independent paths instead of two connections riding the same congested tower.

How Speedify Keeps Content Syncing Across Locations

Signage players pull new creative, playlists, and proof-of-play logs on a schedule, and Speedify keeps that traffic moving even when one path degrades. Traffic is encrypted with DTLS 1.2 and AES-256-GCM or ChaCha20-Poly1305, so content updates and analytics traveling between the media player and the content management system stay private across every connection. With more than one connection carrying traffic, a large video download in the background is less likely to crowd out the small heartbeat messages that tell head office a screen is alive and current.

Central Management with Speedify Teams

Operators managing signage across many sites need every screen updated without a technician visit. Speedify Teams gives administrators a single dashboard with users, billing and usage statistics across every deployed location, and the Speedify Teams API pushes configuration changes to the players. Screen-level uptime monitoring stays with the signage platform’s own tools.

Deployment: What a Speedify Rollout Looks Like

Rolling Speedify out across a signage fleet follows a repeatable pattern rather than a custom project at every site:

  1. Confirm each location has at least two independent connections, such as Ethernet plus a cellular modem.
  2. Install Speedify on the media player, or deploy a Speedify-powered router in front of it.
  3. Enroll the device in Speedify Teams for central visibility.
  4. Set the Speedify mode: Speed Mode for most screens, Redundant Mode for locations tied to point-of-sale or safety messaging.
  5. Download Speedify to any additional locations as the rollout expands.

Combining connections does not create bandwidth. Speedify needs at least two working connections at a location to combine them, and does not invent capacity that isn’t there. What Speedify does is make sure a screen keeps drawing on whatever capacity is available across every connection, shifting away from any single connection as soon as it degrades.

Speedify Is Used on Millions of Devices Worldwide

Speedify has made internet connections faster and more reliable for businesses and individuals since 2014.

15M+

Speedify downloads worldwide

75K+

5-star reviews for Speedify on iOS and Android

82

Speedify server points of presence in 50+ cities on 6 continents

500TB+

Of internet traffic carried by Speedify every week

Speedify Partners

Speedify works with these companies to bring faster, more reliable internet and networking technology to their customers and employees.

Xfinity
Cox
CujoAI
Comcast
OmniAccess
MVD
Magewell
Miri

Digital Signage Internet Connectivity: FAQ

Does Speedify work with existing signage media players?
Speedify runs directly on Windows and Linux media players, or sits ahead of them in a Speedify-powered router, so the digital signage software already scheduling content needs no changes.

How many internet connections can Speedify combine at one signage location?
Speedify combines as many connections as the hardware supports, typically an Ethernet line plus one or two cellular modems, into a single resilient connection.

Does Speedify guarantee a screen never goes offline?
No. Speedify keeps a screen online as long as at least one of its two or more internet connections is working, and Speedify states that failover takes milliseconds, but a location with only one working connection has nothing left to fail over to.

Can Speedify manage screens across many locations from one place?
Speedify Teams gives administrators a central dashboard with users and usage statistics for every signage location, and the Speedify Teams API pushes settings without an on-site visit.

Speedify Business Solutions

Speedify Teams

Get faster uploads and downloads and a more reliable internet connection for all the people and devices in your business.

Speedify for Routers

Run Speedify on your OpenWrt, GL.iNet or Miri router to combine Wi-Fi, 4G/5G cellular, Ethernet, Starlink and satellite internet connections for every device on your network.

Speedify Embedded Solutions and Integrations

Add Speedify to your own app or hardware with the Speedify SDK. Your product then combines internet connections, fails over automatically when one drops, and encrypts the traffic, using the same technology as the Speedify app.