Hello! It sounds like you're having some trouble with the GoodNovel app not connecting, even though you have mobile data. Let's work through this together to find a solution.

First, can you confirm if you're trying to connect to the internet using mobile data only, or have you also tried using Wi-Fi?

While I wait for your response, here are a few common steps we can start with:

1. Check Airplane Mode: Make sure Airplane Mode is turned off. Swipe down from the top-right corner (or swipe up from the bottom, depending on your iPhone model) to check.

2. Restart the GoodNovel App: Close the app completely by swiping up from the bottom of the screen and sliding it off the app. Then reopen it.

3. Check Your Mobile Data Settings: Go to Settings > Cellular > ensure that Cellular Data is turned on and check if GoodNovel has permission to use cellular data.

4. Toggle Your Mobile Data Off and On: Go to Settings > Cellular, turn off Cellular Data, wait a few seconds, then turn it back on.

5. Restart Your iPhone: Sometimes, a quick restart can solve connectivity issues. Just hold down the power button and slide to power off.

Let me know if you try these steps and if they're helpful! If the issue persists, we can dig deeper.