Kala installs on the phone you already have.

On the computer, open your account page and enter the email you subscribed with. The code we send signs you in. The setup page is right there, and it checks your subscription before anything touches the phone.

Android will not let Kala take over while any account is signed in on the phone, so you sign out of them first: Google accounts, and the ones apps create for themselves, such as WhatsApp. The setup page lists every account it finds once the cable is in, and tells you where each one is removed. You add your Google account back at the end; nothing about your apps or their data changes when an account is signed out.

Then two switches in Settings that the page walks you through: Developer options, and USB debugging. The page turns them back off when it is done.

Plug the phone into the computer and choose it in the browser. The phone asks whether to allow this computer; say yes. The page reads the phone's model and Android version and tells you plainly if the phone is not one Kala supports.

Before setup finishes, the page shows two lists: the apps that will be hidden, and the apps that stay. A hidden app is not deleted; it keeps its data and comes back the moment it is allowed. If an app you rely on is on the wrong list, ask for it on the same page. Nothing goes further until you have read the list.

The same screen restates the two ways out, and it is worth reading them now: removing Kala from your account page takes 48 hours, and you can change your mind at any point before then. A factory reset removes Kala right away.

The page installs the Kala app, makes it the phone's manager, hides what you saw on the list, and links the phone to your account. You watch each step confirm itself. If anything stops it, the page says what state the phone is in and switches USB debugging back off; a phone that stops halfway still works as a phone.

When it finishes, the cable connection ends on its own. That is the sign it is done.

On the phone, the Kala app opens with one ask: add your Google account back. Play, WhatsApp, and everything that signs in through it pick up where they left off. Then open the Kala app to install anything from the catalog you do not have yet.

Your login codes, your photos, your messages: nothing to move. This is the same phone.