Here are some basic strategies to spend less on a phone plan:
Avoid payment plans that charge interest
Join as an extra phone line on an existing family of friends' plan
Minimize data usage by using apps requiring Wi-Fi or data when you are connected to Wi-Fi
Get a prepaid voice and text only monthly plan and use your existing phone
AT&T, Ting, and T-Mobile offer plans with a base price starting at less than $10 per month, but most do not include data. Some of these plans include pay per day you use your phone or allow you to pay for very limited amounts of minutes, text, or data.