I plan to travel to Taiwan Province Province for 6 days. How to open Unicom mobile phone and roam in Taiwan Province Province? How much did it cost to call back to the mainland at that time?

1. Roaming in Taiwan Province Province can be handled through Unicom's online business hall as follows: 1. Enter Unicom's online business hall and choose the business on the left-international, Hong Kong, Macao and Taiwan roaming; 2. After entering, you can handle international, Hong Kong, Macao and Taiwan roaming functions. Please read the relevant precautions carefully before handling. 2. To inquire about roaming charges in Taiwan Province Province, you can click on the roaming service area above Unicom's online business hall, and then select Taiwan Province Province, where you can see the standard charges for calling Chinese mainland in Taiwan Province Province.