How do I delete a phone number on my alcatel cell one touch phone

Ahh!.... I think you need more than one touch for that!
Hi Barbara
You didn't mention the brand of the phone.... I don't think Alkatel make any phones themselves. Open up the battery compartment and look for manufacturer or model number etc.
Most of us tech types wouldn't own an Alcatel phone like this!
Usually with smart phones, we go to the App on board that stores all the phone numbers as a list. Then we search for that person & delete them. On an iPhone this is called CONTACTS.
Dig deeper and you should find the address book