Q: Service related or product related?

Hi kayluhsantora,

Thanks for visiting Apple Support Communities.

The loading wheel you mentioned shows network activity on your iPhone. There are several reasons why it might appear:

Network activity: Shows that there’s network activity. Some third-party apps may also use it to show an active process.

From:

Status Icons - iPhone at a Glance - iPhone User Guide

http://help.apple.com/iphone/7/#/iph3bd00c84

If the wheel does not stop spinning, I recommend starting with these troubleshooting steps:

1. Toggle airplane mode: Tap Settings, turn airplane mode on, wait three seconds, and then turn off again.
   
   
2. Restart your iPhone.
   
   
3. Make sure that your software is up to date:
   • Check for a Carrier Settings Update: Tap Settings > General > About.
   • Check for an iOS Software Update: Tap Settings > General > Software Update.
     Note: Some updates may require a Wi-Fi connection.

From:

iPhone: Troubleshooting a cellular data connection

http://support.apple.com/kb/ts3780

You may also want to use the steps in this article to force all applications on your iPhone to close:

iOS: Force an app to close

http://support.apple.com/kb/ht5137

Once they're closed, see if launching a certain app causes the wheel to spin again.

All the best,

Jeremy