Good day.
My old Samsung Galaxy J1 (2016) has one micro SIM card slot.
The new Fairphone 3+ is equipped with two Nano SIM slots.
I have seen instructions on the internet on how to cut a Micro SIM into a Nano SIM. As far as I know, contacts are stored on this card.
Has anyone already done this for the Fairphone 3+, or is it better to keep your hands off it?
The alternative would be to order a new nano SIM card for the same phone number.
But what happens to the contacts?

Question

Good day.
My old Samsung Galaxy J1 (2016) has one micro SIM card slot.
The new Fairphone 3+ is equipped with two Nano SIM slots.
I have seen instructions on the internet on how to cut a Micro SIM into a Nano SIM. As far as I know, contacts are stored on this card.
Has anyone already done this for the Fairphone 3+, or is it better to keep your hands off it? 
The alternative would be to order a new nano SIM card for the same phone number.
But what happens to the contacts?

Accepted Answer

Hi VauWee

I have already punched about 20 SIM cards - and it worked well every time :)
I didn't dare to cut them myself, so I bought a SIM punch at that time - the ~16 CHF were well invested (instead of 40 CHF for a new SIM with my provider at that time).

You can order a SIM punch here, for example: [XCell punch for SIM cards to Micro-SIM, Nano-SIM incl. adapter](https://www.digitec.ch/de/s1/product/xcell-stanzer-fuer-sim-karten-auf-micro-sim-nano-sim-inkl-adapter-smartphone-zubehoer-13359250)

Basically, I would recommend you to save the contacts before punching/cutting, e.g. on your mobile phone or in a Google/Microsoft/... account :)

Your data. Your choice.

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