appwrite/docs/examples/1.3.x/client-android/java/account/create-phone-verification.md

import io.appwrite.Client;
import io.appwrite.coroutines.CoroutineCallback;
import io.appwrite.services.Account;

Client client = new Client(context)
    .setEndpoint("https://<REGION>.cloud.appwrite.io/v1") // Your API Endpoint
    .setProject("5df5acd0d48c2"); // Your project ID

Account account = new Account(client);

account.createPhoneVerification(new CoroutineCallback<>((result, error) -> {
   if (error != null)
        error.printStackTrace();
        return;
    }

    Log.d("Appwrite", result.toString());
}));