Frequently Asked Questions


What is Whistle 3 and how does it work?
Whistle 3 is a device that slides onto your pet’s existing collar, tracks their location and activity, sends alerts if they get away and connects to an app on your phone. Whistle 3 runs on advanced GPS, Wi-Fi technology and America's largest cellular network.
How does Whistle 3 attach to my pet’s collar?
Whistle 3 comes with an attachment piece to secure the device directly onto your pet’s existing collar or harness (up to 1" wide). The device can easily be removed from the attachment when it needs to be charged.
Is Whistle 3 waterproof?
Yes. Whistle 3 is waterproof and durable (rated IP67). It’s designed to go anywhere with your pet. The most intrepid pets can take the Whistle with them through water, mud, rain and snow.
How long does the Whistle 3 battery last?
Lasts up to 7 days. Battery life is impacted by the strength of your Wi-Fi and cellular coverage. Similar to your cell phone, it depends on usage as well as your environment. We will send you a notification when your battery needs to be charged, and a full recharge only takes 2 hours! You can find more battery information for Whistle 3 here.
Does Whistle 3 have activity monitoring?
Yes. Track your pet’s daily, weekly and monthly activity using the free Whistle 3 app on your smartphone. You can also customize activity goals based on your pet’s breed, weight and age.
Does Whistle 3 only come in one size?
Yes. Whistle is designed and recommended for any pet over 8 lbs.
What are the tech specs for Whistle 3?
A full list of product tech specs can be found here.
What are the differences between Whistle GPS Pet Tracker and the new Whistle 3 GPS Pet Tracker?
Whistle 3 vs Whistle GPS comparison chart
Read more about the specifics here.


Is Whistle 3 available outside of the U.S.?
No. Whistle 3 is only available in the U.S. at this time.
Will Whistle 3 work if I am outside of cellular service?
No. The device requires cellular service to properly locate your pet and communicate with your smartphone.
Is the Whistle 3 app free?
Yes, just download the free Whistle 3 mobile app to your iOS or Android smartphone and stay connected to your pet from wherever you are.
Where can I buy Whistle 3?
You can purchase Whistle 3 here.
Can I use Whistle 3 on more than one pet?
When you set up your Whistle 3, you can only choose one pet to assign the tracker to. You need an additional Whistle 3 tracker and subscription for each additional pet.
How is Whistle 3 different from a microchip?
Whistle 3 is the only proactive layer of protection for loss prevention in pets. It uses breakthrough GPS, Wi-Fi and cellular technology to enable you to see where your pet is at anytime and will alert you if your pet leaves home. Traditional microchipping and RFID tags are an important part of pet safety, yet a reactive technology when it comes to losing your pet. To find a lost pet using a microchip, a pet has to be found and taken to a vet or shelter with access to the right database with the owner’s correct information. This process could take days or weeks, but with Whistle 3 you have the ability to locate your pet in minutes. Whistle 3 is an external, on-collar device, while microchips are embedded under your pet’s skin.
What is the warranty for Whistle 3?
We want everyone to love their Whistle 3 Pet Tracker, which is why we offer a 90-day money back guarantee on the purchase price of the device plus a 1 year limited product warranty. For additional warranty information, click here.


Why is a subscription plan required to use Whistle 3?
Whistle uses America's largest cellular network for on-demand location tracking anywhere in the U.S. if they get away. Each device requires a subscription plan to work, and you will be prompted to select a plan (options start at just $6.95) when activating your Whistle 3.


Two Year

Billed biennially

Save 30%


One Year

Billed annually

Save 20%



Billed monthly with

12 month commitment

If I purchase a Whistle 3 device with a subscription plan, how long do I have to activate it?
Pre-paid or free subscriptions must be activated within 12 months of purchase. Each device requires a subscription plan to work, and you will be prompted to select a plan (options start at just $6.95) when activating your Whistle 3.


Where do I go for customer support or technical related questions?
We’re here to help you and your pet! All Whistle customers can visit our support center or call 844-5-WHISTL for assistance.

Monday - Friday

10:00am - 7:00pm EST

Saturday & Sunday

10:00am - 6:30pm EST

How can I return my Whistle 3?
Please email our support center or call 844-5-WHISTL and our helpful team of customer support advocates will assist you with this.