My iphone isn't showing up on icloud, but my ipad is...why?

Hello Milly1984,

Welcome to the Apple Support Communities!

From your question, it sounds like you are seeing your iPad but not iPhone in the Find My iPhone section of the iCloud website. If this is the case, I would suggest reading over the information in the attached article to help resolve the issue.

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

Device does not appear in Find My iPhone

This can occur if:

• The date on your device (iPhone, iPad, or iPod Touch) is incorrect. Choose Settings > General > Date & Time to check and set the date.
• Your device is not up-to-date. It needs to be running iOS 5 or later.
• Your iCloud account is not configured on your device. Choose Settings > iCloud and enter your iCloud account information.
• You have multiple iCloud accounts entered on your iPhone, iPad, or iPod touch. Only one account can have Find My iPhone turned on at a given time. Log in to Find My iPhone with your other iCloud accounts until your device is listed.
• There's a scheduled maintenance or another issue affecting Find My iPhone. Check the System Status site to see if this is the case.
• Your device has lost network connectivity. If you have access to your device, and it appears to have an active Internet connection, enable and then disable Airplane mode. If you continue to have issues, turn the device off and back on.
• Find My Mac can only locate your Mac if it is connected to the Internet via a known Wi-Fi network. If your Mac is connected to the Internet only by an Ethernet cable, Find My Mac will not be able to locate your Mac.

Have a great day,

Joe