What are the precautions when using transportation cards on the Xiaomi Watch S3?

The bus card in the watch is the same as the physical card. It can only record the latest transaction records, so the new records will overwrite the previous transaction records. You can view all transaction records by inquiring about various transportation companies;
2. There is no need to connect the watch to the mobile phone via Bluetooth when using cards;
3. Each city's bus card will have regular system maintenance services. During this period, the recharge will fail. Please avoid this period before recharging;
4. Since the subway station has normal card reading time and fare data settlement, exiting the station will take a little longer than entering the station, it does not affect normal use; 
5. It does not support binding existing physical cards to the watch;
6. If there is an abnormal deduction when swiping a bus card, you can directly contact the bus card company to handle it. Since the bus card transaction is conducted offline, there will be a delay of several days in querying the records.