In Android 15, the SEND_SMS permission is restricted to system apps and cannot be granted to regular apps, as it’s a whitelisted permission. To work around this, use the SmsManager API to send SMS via user-initiated actions, ensuring the user explicitly triggers the message. Alternatively, use an intent to open the default SMS app with the pre-filled message, allowing the user to send it manually. This approach aligns with Android's tightened security policies.