Ethel Brown relies on her cellphone to stay connected with potential employers.

After losing her job as a bookstore manager in New York City two years ago, Ethel Brown, 53, also lost her home. Since then, she's mostly been living under an acquaintance's roof while trying to find work, and may need to find another place to live soon.

Though money is tight, Brown makes sure she stays on top of her monthly cellphone bill for a $35 prepaid plan from Boost Mobile, which provides her with unlimited minutes and texts. Sometimes she cuts back on buying a cup of coffee or extra food, to ensure she can pay her cellphone bill.