Island

What Island Actually Does

Island is a tool by Feloo that puts Android apps into a walled-off container on your phone. It works by creating a second profile — the same thing your company sends you when IT forces a work folder onto your device. The difference is you control it, and the apps inside can't reach the data outside unless you explicitly let them. Most people use it for two things: cloning apps so they have separate logins, or hiding apps behind a password. Both are straightforward. Neither is revolutionary.

Setting Up Island

Download Island from the Play Store or the developer's GitHub page. When you first open it, the app will prompt you to enable the Device Owner permission. This is where most people hit a wall. Android won't just hand this over through the settings menu — you have to go through a debug setup using ADB on your computer. Here's the process without the fluff. Enable developer options on your phone by tapping the build number seven times in Settings. Connect your phone to a computer with USB debugging turned on. Open a terminal and run these commands: adb shell dpm set-device-owner com feloo island / .DeviceOwnerReceiver

That's the whole command. Yes, it looks exactly like that. The spacing matters, and the capital letters are case-sensitive. If you mess up the syntax you'll get an error and have to start over. I've lost count of how many times people complain about this step online. It's the single biggest barrier to entry for Island. Once ADB approves the Device Owner, Island takes over the provisioning flow. You'll follow the on-screen prompts, grant permissions, and the work profile gets created. Everything after that is point and click. After you've got Island running, enabling or disabling cloned apps is trivial. Tap any app in the Island interface and choose either Clone or Isolate. Clone makes a duplicate instance of that app that runs alongside the original. Isolate locks the app entirely behind the profile so it can't reach external storage or contacts.

I use Isolate on banking apps and on anything that tracks location. It's not magic. The app still has access to what Android normally allows — network, sensors, your calendar if you grant it. What it can't do is read files outside its sandbox or access your personal account data directly.

The Real Problem No One Talks About

Island sounds like a privacy dream until you actually try to use it in daily life. The cloned apps operate in their own environment. Notifications sometimes route to the wrong profile. Batch file transfers from the main Android storage to an Island app break about half the time. And if you ever wipe your phone or switch to a new device, you have to redo the entire ADB setup from scratch — no export option, no cloud backup for the profile itself. I once spent forty minutes troubleshooting why a cloned messaging app wasn't receiving push notifications. The issue was that Google Play Services doesn't treat the cloned profile as the same identity. The app registered under the original profile but ran under the cloned one. The workaround was to reinstall the app fresh inside Island after the ADB setup completed, not before. Nobody mentions this in the instructions. Another edge case: some apps detect they're running inside a managed profile and refuse to function at all. Banking apps and certain payment platforms fall into this category. Island can't force them to work. You either accept they won't clone, or you find a different solution entirely.

Island is not a silver bullet for privacy. It's a containment tool, nothing more. Apps inside the profile can still collect data. They just can't leak your personal data as easily. If your concern is that your employer monitors your activity, this does zero for you because the work profile is designed exactly for that kind of monitoring. Island works best when you're the one in control of the boundary. For people who mainly want separate accounts on social media or messaging apps without juggling multiple phones, Island solves a real problem. For people hoping it hides their digital footprint from everyone, it won't come close. Download it, set it up properly, and adjust your expectations accordingly.