There is a mobile phone card in Xinye County of Nanyang. Is it cost-effective for the elderly to use mobile or Unicom? What kind of packaging do you have? How much is the charge?

Mobile music listening card monthly rent double April rent 5 yuan, call 0.2 yuan, send a song package, which is equal to free answering; Home card calls 0.25 yuan a minute in the county; The township calls 0. 15 yuan for one minute, and the answer is free. Minimum monthly consumption 15 yuan, including all consumption. Unicom card charges are almost the same, B20 card monthly rent double No.4 3 yuan, call 0.2 yuan for one minute, and the answer is free; D 13 calls to Kaxian county are 0.23 yuan a minute, calls to villages and towns are 0. 13 yuan one minute, and the minimum monthly consumption is 15 yuan. Now buy a mobile card to send a scratch card, the lowest prize is a white elephant gourmet instant noodles, and the highest phone bill is 4888 yuan; Unicom sends 1.5 liters of Fulinmen oil or stainless steel basin.