Lost my SIM card and I need another SIM card with the same number

KaramOs_1970842 You can get one via your Account Dashboard and the info will be in the article quoted by Rebekah_150 .

Don't forget that your account will probably be suspended until you activate the replacement - this is a security issue to protect you if someone else has your sim.

here is a guide to help https://help.smarty.co.uk/en/articles/1215834-what-to-do-if-your-sim-card-gets-lost-or-stolen