All of the major cellphone carriers — AT&T, Verizon, and T-Mobile — are planning to shut-down their older 3G networks this year. Millions of people in the United States who use 3G phones and other 3G devices will be unable to text, make calls, or even reach 911. If you are currently relying on a 3G network for your devices – phones, home security systems, vehicle navigation services, personal medical alert devices, or some e-readers – you will be affected by this change. To encourage the transition to newer devices, some service providers are offering substantial discounts and/or trade-in options on new smartphones. However, even discounted phones may be financially out-of-reach for many users. Marginalized or low-income users and the elderly, as well as rural and prepaid mobile customers, will feel the impact of this change.