Mobile Data Offloading Explained: How Speedify Uses Wi-Fi and Cellular at Once for Carriers

Mobile data offloading frees up bandwidth by moving traffic to Wi-Fi networks

Mobile data offloading means routing subscriber traffic away from the cellular network and onto Wi-Fi, which is cheaper to carry and often faster. The catch is the handover: the moment a device switches networks, downloads stall and calls drop.

Speedify is software that combines Wi-Fi and cellular at the same time instead of choosing between them, so traffic shifts onto Wi-Fi gradually and nothing restarts. Speedify keeps the session up when one connection drops only because it has both to work with; on a single connection it works as an encrypted VPN and cannot stop that connection from dropping.

With Speedify, your internet stays on when one connection fails.

PRIMARY BACKUP WI‑FI CONNECTED 4G / 5G STANDING BY DROPPED LOST CONNECTION CELLULAR TAKING OVER SPEEDIFY SWITCHES YOU STAY ONLINE NO DROPPED CALLS, NOTHING TO RECONNECT
EventLink drops
SpeedifyReroutes
CallsStay up
DownloadsKeep going

Find out why offloading matters so much to operators, and how combining connections saves an MVNO money while improving what the customer experiences.

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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

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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

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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 Mobile Data Offloading Matters to Carriers

Carriers and MVNOs have watched demand outgrow cellular capacity for years. Phones keep getting more capable, subscribers stream more video, and spectrum is expensive. Moving traffic onto the wired and Wi-Fi infrastructure that already exists is the cheapest way to take load off the core cellular network.

Mobile data offloading happens in two places. The phone sends traffic over Wi-Fi whenever it is joined to a network that works, and the carrier adds Wi-Fi capacity (its own hotspots, partner venues, subscribers’ home routers) and steers phones onto it. Every gigabyte that travels over Wi-Fi is a gigabyte the cellular network does not have to carry.

Until recently, operators could not push mobile data offloading tactics further without hurting the customer experience. The obstacles include:

  • Phones are slow to tell when a hotspot is “dead” (connected but not passing traffic)
  • Manually switching between networks is time consuming and cumbersome
  • Consumers end up with interrupted internet access during network changeovers
  • Consumer concern about hotspot security

Speedify gives network operators and hardware makers its technology for combining internet connections: traffic moves between internet connections without dropping the session, which improves quality of experience while cutting LTE usage.

Mobile Data Offloading with Speedify: Lower Costs for MVNOs, Better Service for Subscribers

Speedify handles combining internet connections and Wi-Fi offloading issues on mobile devices. It can be built into existing iOS, Android, Windows and macOS software and runs in the background monitoring and improving network performance for all the apps on the device. Speedify is cost aware and uses policy based routing that can be configured for increased speed or reduced cellular usage. Optional VPN encryption means that Speedify can also keep users secure across public Wi-Fi networks.

When a phone joins a hotspot that is connected but not passing traffic, the phone can take a long time to give up on it and return to cellular, and some phones stay stuck on the dead hotspot. The subscriber is left without a working internet connection and learns to avoid hotspots. Speedify keeps cellular in use alongside Wi-Fi, so when the Wi-Fi stops carrying data, traffic continues over cellular on the same session.

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

Learn How Speedify Can Solve Mobile Data Offloading for Your Business

Contact the Speedify team today to schedule a demo or learn more about Speedify enterprise offerings.

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.