The Volta Wireless SIM card is actually 3 SIM cards in one – standard, mini and nano.
To get the SIM card size you need, please just push on the part of the SIM card you want and hold the plastic that you don’t need. Your SIM card will pop out.
Most mobile phones today use a Nano SIM card (the smallest size). To get a Nano SIM card, just push on the plastic on the back of the metal part of the SIM card and hold all the rest of the plastic around it, and your Nano SIM card will pop out from the rest of the plastic. Please feel free to throw the rest of the plastic away.