When you cut down to NanoSIM size there's a risk of damaging the SIM contacts because not only does the plastic need to be taken out, but you also need to cut into the copper surface itself. ... Even if you use one of those “certified” cutters, you can still damage the SIM contacts.

Is it okay to cut a SIM card?

It is typically as easy to cut through the metal of the SIM card as it is the plastic card surrounding it. You can also use regular scissors but the smaller pair offer more accuracy. ... It's better to trim it slightly large and squeeze it in, rather than cut off too much and it be wiggling around inside the SIM card slot.

Can I cut my SIM card to micro size?

You can cut it down to size and convert any standard SIM to a micro SIM. ... This is what you'll need to perform the manual SIM to Micro SIM conversion: Patience, and up to 15 minutes. Sharp scissors – for cutting the sim card.