Online but old location why?

Hello kanoknapat,

Thanks for using Apple Support Communities.

I see you looked at the article that explains the troubleshooting for the Find My iPhone feature. Within it, there is an explanation why it would show an old location:

iCloud: Troubleshooting Find My iPhone, iPad, iPod touch, or Mac

http://support.apple.com/kb/TS4006

Location appears to be old or inaccurate

This can occur if you previously located your iPhone, iPad, iPod touch, or Mac and your device has not yet provided an updated location to iCloud.

Note: Your device's last known location will be available for one day. After 24 hours, you will no longer be able to see this last known location if the device is offline or otherwise unable to connect to Find My iPhone to provide an updated location.

Take care,

Alex H.