How long will China Unicom's points be cleared?

Consumption and reward points are valid for 36 months, and the points generated every month can be accumulated continuously until the first month of the same month in the fourth year. For example, the communication consumption in 20 16 and 1 June, if the payment is normal, the corresponding communication consumption points and reward points will be formed at the beginning of March 20 16 and expire at the end of February 20 19. Tips: points must be applied within the validity period, and will be invalid after the validity period; Because different cities have different policies, please refer to the local conditions for details.