Questions, a mistake in a translation, or a problem with the App? Email support@myangbytelabs.com — for a translation, include the passage reference (e.g. "Dhammapada 5").
Premium follows your App Store or Google Play account. On the new phone, open the Premium screen and tap Restore purchase.
Sign in with the same Apple or Google account in Me → Account on both phones.
iPhone: Settings → your name → Subscriptions. Android: Google Play → Payments & subscriptions → Subscriptions.