This includes by phone, online using the website or mobile app, in-person or automatically with a credit card. AT&T Wireless is one of the biggest names in American cell phone providers.

Verizon sells phones and phone plans across the United States. With stores and cell towers in every state, Verizon’s widespread reach allows customers to call, text or use data almost anywhere.

There are some very common deal breakers, according to research and relationship experts. However, deal breakers can also be very personal—everyone is allowed to choose what works for them. It’s ...