The size of the nano-SIM card designed by Apple is/kloc-0 12.3mm×8.8mm Apple suggests that the nano-SIM standard should replace the plastic material used by micro-SIM. Nokia, on the other hand, adopted the design scheme of nano-SIM card with the size of 10 mm× 8 mm. ..
According to ETSI regulations, nano-SIM card must support eight circuits, but it does not specify how to set eight shock points. Apple's design is theoretically compatible with micro-SIM, while Nokia's design is not compatible with most mobile phones, but this design can better improve the performance of mobile phones.
If ETSI's standards contain key patents, ETSI will require the patent holder to license the relevant patents to a third party in accordance with FRAND (fair, reasonable and non-discriminatory) terms. In this regard, Apple promised that if the company's nano-SIM card design scheme becomes a standard, then Apple will authorize all relevant patents it holds for free. A Nokia spokesperson said that Apple's promise not to charge the patent fee for the nano-SIM card is a blank check, because it does not own the key patents related to its design scheme of the nano-SIM card.
Nokia expounded the technical advantages of its nano-SIM card design scheme. Nokia claims that its nano-SIM card and SIM card are completely different in size, while Apple's nano-SIM card and SIM card are the same in length, so there is a risk that users will install the wrong card, resulting in damage to both the machine and the card. In addition, Apple's nano-SIM card design needs a tray, which will increase the cost and occupy space, partially offsetting the advantage of reducing the size of the SIM card.