> ## Documentation Index > Fetch the complete documentation index at: https://documentation.qonversion.io/llms.txt > Use this file to discover all available pages before exploring further. # Android test devices > Set up test devices to make in-app purchases **1. Test devices** You can use both physical devices and emulators to run your app and test in-app purchases. Make sure that the emulator has the Play Store installed. You can check that by selecting **Tools->AVD Manager** in Android Studio. 303 Emulators must use an emulator image with Google Play Store. **2. Test account** The test account from the [License testing](license-testing) step must be added to the test device **first**. **3. Add a PIN if needed** When you make an in-app purchase for the first time, Google may ask you to verify your account. The following message may appear: "Something went wrong", even if you enter the correct password. 382 To get rid of this error on your device navigate to **Settings->Accounts->** choose your account from the list. Select Google Account: Info, security & personalization. You have to finish signing in to continue. Click **Sign in**. 372 Google advises to add a lock screen. Click the **Next** button. 378 You can choose any convenient screen lock. For instance, let's choose **Continue without fingerprint**. Select and set **PIN** for security. 369 You may need to click on **Sign in** again to update the data. Finally the authorization process is over and you can make in-app purchases. 368 *** [Android In-App Products Setup](android-in-app-products) [Creating an App in Google Play Console](app-creation-in-google-play-console)