Sim card cut so that it fits into a mobile purely?

Hey I've got a cell phone and although the huawei p10 is now the problem that my aldi talc card does not fit in and I've heard that you can cut the card properly so that the stop fits now I want to know whether it is true and what the disadvantage would be if something goes wrong Thanks for your answers

Either ask for the right Sim at the dealer or you go to the retailer and let her punch out. O2 and Vodafone definitely do that, maybe also Media Markt. But would ask.

Many mobile phone stores have a small device for punching the sim card to the appropriate size. In extremely rare cases, however, the card can be destroyed. Then you have to request a replacement from your provider - ideally in the right size.

Yes, they can be cut with scissors.

The disadvantage, if something goes wrong, is mainly that the SIM does not work anymore.

Alditalk sends a smaller sim for free, if you have first tormented long enough by the holding pattern.