Worried about pricey mobile data overage charges? Speedify can cap how much cellular data you use while keeping you online.
Speedify is an app that combines two or more internet connections at once – such as Wi-Fi and your phone’s 4G/5G cellular data – for faster, more reliable internet. It’s also cost-aware: you can set daily and monthly data limits so Speedify leans on Wi-Fi and never pushes you past your carrier’s cap. It works on Android and iOS.
With Speedify, your internet stays on when one connection fails.
When one of your connections drops, Speedify automatically routes your traffic to your remaining connections — so calls don't cut out and downloads don't stall.
How do I use WiFi 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.
2016 US Carrier Data Overage Charges
| Carrier | Overage Charge |
| Verizon | $10-20 per GB depending on plan |
| T-Mobile | None (Throttles after 21 GB) |
| AT&T | $15-60 per GB depending on plan |
| Sprint | None (Throttles after 23 GB) |
With Speedify running on your iOS or Android device, you can rest assured that you never go over your carrier’s data cap again! While lots of folks use Speedify Mobile to combine Wi-Fi and mobile data for faster speeds, one of Speedify’s coolest features is that it’s cost aware. With just a few clicks you can prioritize your networks based on cost, carrier data limits, and other factors. Not only does Speedify Mobile tell you how much cellular data you’ve used in a given billing cycle, but it can actually automatically prevent you from going over you carrier data cap.
Setting Data Limits with Speedify
Speedify Mobile comes with some smart defaults: it has a data limit of 1GB per month, and 100MB per day on your cellular adapter. The cellular is also set to Normal priority. This means that it is used less than the Wi-Fi. When the cellular connection is set to Normal, Speedify will use the Wi-Fi as long as it fast enough for what you are doing. If it can’t keep up, then it will also use some of the cellular connection for a speed boost or to failover to, should the Wi-Fi stop working.
There are a couple settings that you may want to check are properly set:
Set your Usage Limit: First of all, use Speedify’s Usage Limits. Set a Usage Limit that is lower than your actual monthly cap. You should also set a daily usage limit. We recommend starting with a daily limit that’s about 10% of your monthly limit. If you can use 2GB per month, then set your daily limit to 200MB. We chose 10% because there are some days you may use much less data, and there are some days where something important is going on and you need to use a little extra. But the important thing, is that you don’t have one or two out of control days where one badly behaved app accidentally uses up your whole month’s worth of data.
Note: Speedify only measures data usage while you are connected to a Speed Server. Unless you use Speedify 100% of the time, you should set your Monthly Usage Limit to less than your actual data cap with your carrier.
Set your Priority: By default, Cellular connections are set to Normal. This is a good middle position, where it’s not used when you have a good Wi-Fi connection. You can also set it to Backup, in which case it’s used a little less (basically only when the Wi-Fi isn’t working at all). Of course, all of this depends on you sometimes having a Wi-Fi connection to use, if you’re only on cellular, that’s what Speedify is going to use all of the time.
Once Speedify Mobile has the skinny on the various Internet connections you use from day-to-day, you can rest assured that you’ll be making the best use of the free bandwidth around you, and avoid overage charges without so much as lifting a finger.
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Combine Wi-Fi, 4G/5G cellular, Ethernet, Starlink, and more into one faster, steadier connection. Free to try — no credit card required.
🚀 Speed
Faster uploads and downloads by bonding all your connections at once.
📶 Stability
Automatic failover in under a second when any connection drops.
🔒 Security
AES-256 encryption on every connection, on every network you join.
15M+ downloads worldwide. 75K+ five-star reviews on iOS and Android.