What should I do if China Mobile fails to redeem coupons?

China Mobile's coupon redemption failure may be due to the following reasons:

1. Expired coupon: If your coupon has expired, you cannot redeem it. For exchange adjustment, please contact China Mobile Customer Service.

2. Out of range: If the coupon you hold is not within the range used by China Mobile, it cannot be redeemed successfully. You can go to the local business hall for inquiry and handling.

3. The system is busy: If there are too many people and the system is busy, the exchange will also fail. You can wait a few minutes, and then click Redeem again.

If China Mobile fails to redeem coupons, you can try the above solutions. If all the above methods fail, it is suggested that you directly contact the customer service of China Mobile, or go to the local mobile business hall in China to consult the solution.