Excuse me, my mobile phone is a public security network package in Dalian, Liaoning Province. Why can't I upgrade to 4G and switch to a package with a traffic package?

If you can't change the package, it doesn't rule out that the mobile phone number is restricted. For example, the reasons why old users can't apply for 4G package are as follows:

1. The original 3G contract was renewed and has not yet come into effect;

2.3G network card, one card with double numbers;

3. Number-portability users (Tianjin, Hainan, Jiangxi, Hubei and Yunnan only);

4. Group customers and industry application users;

5. Plans for national unification or provincial contracting;

6. There are other restrictions that cannot be lifted;

7. Online time is less than 6 months (excluding);

8. Arrears, downtime, account cancellation, blacklist, etc.

You can check whether the above problems exist. If you can't handle it after eliminating the above reasons, it is recommended that you contact Unicom's customer service for verification. Tips: More traffic, lower cost, choose 4G national combination package. Please click /sAAl9 for details.