A. 1. Use Wi-Fi: Connect to a Wi-Fi network to activate your data plan. If you don’t have access to Wi-Fi, consider using a friend's or public Wi-Fi. 2. Check your mobile settings: Ensure that your mobile data is enabled in your device settings. Go to Settings > Network & internet > Mobile network and toggle on mobile data.

B. 3. Restart your device: Sometimes, a restart can help in activating mobile data.