Excuse me, what mobile phone number signal in Qingdao is cost-effective?

Unicom CDMA is very good, the signal is good, the radiation is low, and the phone bill is favorable.

Happy listening card is cost-effective, and the minimum monthly consumption of 35 yuan includes: local telephone charges, SMS charges, long-distance charges, roaming charges, caller ID charges, and one-way charges for answering incoming calls. Network 0.2/ min, network 0.4/ min. 20% discount on prepaid cards. 100 yuan only for 80 yuan. Very affordable ~ ~