Yes, if you bought a 2G card at the beginning, Unicom supports changing the number and card to 3G, but if you participate in the monthly return activity at the beginning, you can't stand it after changing it, and the phone bill is still in your account! It doesn't matter. It just means that your package has been changed to 3G, and you can enjoy 3G service. There should be nothing else!

I don't know what you mean by influence. Hehe, anyone who doesn't understand Unicom business can leave me a message!