... the sim card by yourself,Firstly, you need to measure the sim card, remark part-lines on the card, ... then you hold a scissor to cut the card, you need to be careful to avoid broken the sim card. Many ... people had a try, it's high risk to broken the sim card.With this cutter, all the measurement ... is accurately done for the cutter, you just need to input the sim card in correct way. we have ...