i have been my 5s for almost 2 years. after upgrading to 9.3 i can't complete the update.they are saying i can't unlock the phone with my apple id

Are you the ORIGINAL owner of the iPhone or did you buy it used? If it is second-hand, you may have run into activation lock:

Turn off Find My iPhone Activation Lock - Apple Support

If you are the original owner then post back.

Greetings wisdomjunioragbeshie,

Thanks for using the Apple Support Communities!

I understand that after updating your iPhone to iOS 9.3, your current Apple ID and password are not working to activate your device. In some cases, the hint that you see on the Activate iPhone screen may not match your current Apple ID.

We know that this situation can be frustrating, but we’re here to help. To troubleshoot this situation and work towards resolving it, please read over and follow the steps from the following article.

If you can't activate your iPhone, iPad, or iPod touch after installing a software update - Apple Support

Best