1 This number is subject to contract restrictions. If you participate in Unicom's contract plan, there may be contract restrictions, resulting in the package can not be downgraded.
2. You are not allowed to change the arrears: If your mobile phone number is in arrears, you may not be able to change the subscription.
3. You changed the package in the current month: If you changed the package in the current month, you may not be able to change it again.
4. Abnormal service status such as number protection and loss reporting: If your mobile phone number is in abnormal service status such as number protection and loss reporting, you may not be able to change the package.
5. Blacklist users: If China Unicom blacklists, you may not be able to change the package.
6. Other factors: For example, if you apply for a new contract plan, but it has not yet taken effect, it may also lead to the failure to downgrade the package.
If your Unicom Changyue ice cream package cannot be downgraded, I suggest you contact Unicom customer service to find out the specific reasons and handle it according to the solution provided by customer service.