Will ICBC inform me of its successful application for prepayment of mortgage?

In this case, after you submit your application, the bank will generally notify you by phone or SMS after approval. If you don't receive any news after one month, you'd better call the mortgage department of ICBC for consultation, and you can repay part of the loan after approval.

As to whether the remaining loan is fixed in term, the monthly repayment amount is reduced or the monthly repayment amount is reduced, you'd better ask the bank to see if you have the option.