Replacing a lost, damaged SIM card, or upgrading to 4G can be done at the nearest MyGraPARI and GraPARI. Find the location by clicking https://tsel.id/grapari.
You can also replace your SIM card on GraPARI Online by clicking https://graparionline.telkomsel.com
Just prepare your national ID and card replacement fee of 10.000 IDR.