The cell phone contact forgot who it was. Call or text to ask?

You can call or send a text message to ask.

Call and ask: If you want to get an immediate response from the other party, then calling is a better choice. By calling, you can communicate directly with the other party and ask who the other party is. This way can get the information you need faster, but you need to pay attention to the call time to avoid unnecessary interference to the other party.

SMS Inquiry: If the other party is not convenient to answer the phone or just wants to confirm the identity of the other party, then texting is a more convenient way. You can simply introduce yourself to the other party, show that you have forgotten who the other party is, and then ask the other party to provide relevant information.