Speedify 16.4: Choose the Speed at Which Secondary Internet Connections Join In

Speedify 16.4 Adds the Secondary Threshold for Internet Connections

Speedify lets you set a priority for each internet connection. A Secondary internet connection, such as a 4G/5G cellular plan with a data cap, only carries traffic when your Primary internet connections are congested or unavailable. Speedify 16.4 lets you decide what “congested” means, as a number in Mbps.

The short version: Speedify 16.4, released on 9 February 2026 for Android, iOS, macOS, Windows, Linux and OpenWrt, adds the Secondary Threshold. The Secondary Threshold is a speed you choose: when your Primary internet connections fall short of the threshold, Speedify brings in your Secondary internet connections to fill the gap, and when the Primary internet connections meet the threshold, the Secondary internet connections stay idle. Speedify 16.4 also handles poorly performing internet connections better, adds an option for removing old network adapters, lets Linux devices act as Pair & Share cellular sharing hosts, provides apk installers for OpenWrt 25 and later, and fixes data arriving out of order in Redundant mode with the Performance Enhancing Proxy (PEP) on OpenWrt. The 16.4.1 update fixes custom bypass with multiple IP addresses, unlimited rate limits on Pair & Share cellular sharing hosts, and PEP speed dips on Linux.

In this release:

  • Secondary Threshold: you choose the speed at which Secondary internet connections join in
  • Linux devices can be Pair & Share cellular sharing hosts
  • OpenWrt: apk installers for OpenWrt 25 and later
  • OpenWrt: a Redundant mode fix with PEP turned on
  • Fixes in 16.4.1 for custom bypass, Pair & Share cellular sharing rate limits and PEP on Linux

How the Secondary Threshold Decides When Secondary Internet Connections Join In

Speedify keeps track of the combined speed of all your active Primary internet connections. If the combined speed falls short of the Secondary Threshold for your current internet traffic, Speedify activates your Secondary internet connections. If the Primary internet connections meet or exceed the threshold, the Secondary internet connections stay idle.

Take home Wi-Fi as Primary, cellular as Secondary, and a threshold of 20 Mbps. Below 20 Mbps on the Wi-Fi network, Speedify brings in cellular. Once the Wi-Fi network recovers, Speedify backs off cellular again.

To set the priority of an internet connection, tap the internet connection on the Speedify dashboard and choose Primary or Secondary. The priority guide explains every priority level, and the Secondary Threshold guide covers the threshold.

The trade-off: a higher threshold switches the Secondary internet connections on more often. On a cellular plan, more switching on means more data used and, on phones and tablets, more battery drain. If the plan is metered, the Speedify Data Limits feature can help keep cellular data use in check.

Linux Devices as Pair & Share Cellular Sharing Hosts

The Pair & Share cellular sharing feature lets Speedify users on the same local network share and combine cellular internet connections between devices. The host is the device doing the sharing. Speedify 16.4 allows Linux devices to be hosts.

Data shared from a cellular internet connection counts as tethering data on your mobile plan. Hosts have been able to change the sharing speed limit from the default 10 Mbps since Speedify 16.3, and Speedify 16.4.1 fixes setting an unlimited rate limit on a host.

OpenWrt: apk Installers and a Redundant Mode Fix

Speedify now provides installers in the apk format for OpenWrt 25 and later. apk is the package format newer OpenWrt releases use to install software.

Speedify 16.4 also fixes a bug that could make data arrive out of order in Redundant mode with the Performance Enhancing Proxy (PEP) feature turned on. Redundant mode sends all your internet traffic over every internet connection at once, so data lost on one internet connection has already arrived over another internet connection. PEP speeds up web pages and downloads, and is especially useful on OpenWrt and Linux routers.

Other Fixes and Changes in Speedify 16.4

  • Speedify improves handling of poorly performing internet connections.
  • Speedify adds an option for removing old adapters.
  • Fixed in 16.4.1: setting multiple custom bypass IP addresses.
  • Fixed in 16.4.1 on Linux: a bug causing occasional performance dips at high speeds with the PEP feature.

How to Update to Speedify 16.4

Speedify 16.4 is out for Android, iOS, macOS, Windows, Linux and OpenWrt. Update every device you use Speedify on, routers included.

Found a problem in Speedify 16.4? Tell Speedify support.

Update Speedify Now

Speedify is the only app that seamlessly combines all of your connections, including WiFi, 4G, 5G, Ethernet, and Starlink, into one stronger connection to keep you online and secure with increased bandwidth, reduced latency, and failover protection.

You can easily share and combine LTE, 4G and 5G cellular connections between devices to create a faster, more reliable connection for everyone using Speedify’s cellular sharing feature, Pair & Share

Make sure you update Speedify on all your devices, including computers, mobile devices and supported routers!

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