Three sizes: Mobile SIM card usage Guide

There is no doubt that the most popular mobile phones currently selling non- iphone 5s , I believe there are still a lot of netizens are currently watching, because the iphone 5s and iphone 5C with the same Nano-sim card as the iphone, So many new users before the use of a process, is the need to replace the Nano-sim card, the SIM card with our previous contact with the standard SIM card and Micro-sim What is the difference? What channels are there to replace the Nano-sim card?

Differentiate three types of SIM cards

Before we learn about the SIM card type, let's briefly introduce the SIM card function, as we all know SIM card is the identification card we inserted when using the phone, sim on the one hand to set the user identity, on the other hand to identify the operator network, storage phone number and other information, Because each card belongs to a mobile operator and is used only on one phone, it cannot be duplicated or used on multiple phones at the same time.

There are currently three sizes of SIM cards in the mobile phone

At present, the SIM card is divided into the standard size of the SIM card , that is, we often say that the KCAL, followed by the Micro-sim card , commonly known as the Small card , and even the last appearance of the Nano-sim card , This is the Micro SIM card currently used in the Apple iPhone 5 series. There are three types of SIM cards, and Apple has been given, Apple released the iphone 4 and ipad in 2011, and for the first time the Micro-sim card was used, as the iphone 4 the pursuit of more thin fuselage, compressor body interior space to increase battery capacity, and Micro-sim card volume than the standard SIM card reduced by one times.

Apple iPhone 5 series with Nano-sim card

As for the Nano-sim card, Apple and Nokia have issued design standards, but finally ended in Apple's victory, Apple in 2012 when the IPhone 5 was first adopted Nano-sim card, the reason is Nano-sim card replacement Micro-sim card , the ultimate reason or to "small", theIPhone 5 in both hardware and software are significantly higher than 4S, so the phone inside the need for more space to place components, and mobile phone's endurance can not be weakened, Nano-sim card is just the size of the standard SIM card 60%, So the use of the Nano-sim card is taken for granted.

The Nano SIM card is a new type of SIM card that Apple forces pushes. This Nano SIM card has a one-third reduction in size compared to the Micro SIM card, which is smaller than the standard card and more than half in thickness. At first, the Nano Sim was rejected by handset makers such as Nokia and Motorola. But shortly after, the Nano SIM design proposal was adopted by the European Telecommunication Standards Association, while other vendors submitted the proposal to support the micro-SIM card. I believe that on IPhone 5 , we will see the nano SIM figure.

Micro Sim (left) and Nano Sim (right) compare pictures

How to replace a SIM card

It has to be said that Apple's push for product innovation, with Apple's iphone 4 and iphone 4S , has been followed by other manufacturers, most of which are now using the Micro-sim card for most of their flagship-class models. The reason is that the cell phone internal motherboard space is very dense, the degree of integration is very high, and battery life technology can not break through the bottleneck in a short time, so can only reduce the size of the SIM card processing.

Professional shears can be cut into Micro-sim card and Nano-sim card

From the user's point of view, the difference between the three types of SIM is the size of the size of the area, the use of basic features no difference. After the use of Micro-sim card in mainstream brand flagship mobile phone, users have to cut cards or change small cards. The first Apple IPhone 4 After the domestic listing, the three operators did not provide Micro-sim card, users can only use professional Shears card cutting card or to the operator's business hall shearing card. Since the launch of the IPhone 5 , a dedicated Nano-sim card cutter has also appeared on the market.

Users should be careful to cut their own knives

Watching the iphone sales are getting higher, the three operators and Apple's cooperation more deeply, so operators to launch Micro-sim card and Nano-sim card is also imperative. At present, the three major operators in the business Hall are supported free replacement of small cards, because the Nano-sim card actually only retains the metal contact parts, it is important to use a professional shears, shears in accordance with the correct area to reserve SIM card space, will not affect the normal use, But I still advise you go to the business Hall to replace the special card, on the one hand to reduce the risk of bad card, on the other hand is more standardized, let people feel steadfast.

Notes on changing a small card

Take the author to Beijing, China Mobile Office for example, only need to carry the standard SIM card in normal business, the Office will have special personnel for your personal handling, in the process of changing the card will ask you to "change the iphone card or ordinary card", "The iphone card" naturally refers to The IPhone 5 series Nano-sim card, and the so-called "ordinary Card" is the Micro-sim card, then through the computer query mobile phone number to send the verification code to your phone, so make sure you change the standard card must be in normal business, no arrears or downtime.

Use the tray to revert to a standard size SIM card

After getting the Nano-sim card, there will be someone to import your previous standard card saved phone numbers, etc., to complete the card change process. If we want to re-use the old mobile phone or in the future to replace the standard card phone, we do not have to worry about, can ask the Salesperson Micro-sim card and Nano-sim card holder, or buy the corresponding Cato, the small card "recovery" to kcal completely does not affect the normal use of the future. It is important to note that if you want to change back to a standard SIM card, you will need to pay the carrier, similar to when we lost the phone and then re-fill the card.

Summary: Apple several generations of the iphone's hot selling so that the small card more and more popular, as for the small card will be completely replaced KCAL, now see the short-term can not be concluded, the majority of models are still using the standard SIM card, especially the domestic two or three-line market in the main sales of low-end models, in addition to the operator is currently not This also involves a huge amount of human and material investment. The so-called "natural", such as mobile main push NFC Mobile card, convenient nature of the high degree of popularity.