What if the big data travel card can't find travel information?

If you can't find travel information in the travel card of communication big data, there may be many reasons: the time you stay in this area, whether you use mobile phone traffic and voice call functions, and whether your mobile phone is turned off when you stay in this area;

Stay in a place for less than 4 hours, never use mobile phone traffic or voice calls, and don't turn on your mobile phone during your stay in a place, which may lead to no signaling data, and its itinerary cannot be determined and displayed;

If you stay in a certain area for more than 4 hours, it may be suggested that you can wait for a while before trying to get it, because domestic users have too many requests in a short time. If you can't find it after many operations, you can feedback it to the mobile phone number operator for assistance.

China Unicom's mobile phone customers can call the local Unicom's manual customer service with their mobile phone number where they can't find the itinerary information, and provide the city where they stayed in the last 14 days, and feed back to the relevant departments to help repair the data.