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19.03.20197469
Buying a new phone is a joyful event, but it can also bring unexpected problems. Most modern phone models released after 2011 have different requirements for SIM card parameters than their “older” comrades. And the latest iPhone models, starting with the iPhone 5, as well as some flagship Androids, such as Samsung and Meizu, use the latest standard - nano-SIM. If you find that your old SIM card does not fit into your new smartphone, this information is just for you. And if you purchased a new SIM card along with your phone, then you will probably need to find out your MTS or other operator number.
Nano-sim - what is it?
While smartphones are updated, becoming thinner and more compact every year, ordinary users face difficulties in using them. And if previously all SIM cards were the same size and could be used in absolutely any phone (from an old push-button Nokia to an ultra-modern iPhone), now everything has changed.
sim card diagram
Almost all phones released after 2011 require a SIM card with more compact parameters - micro-SIM or nano-SIM. And if most users already know about micro, then the newest nano-sim, which first saw the light with the release of the fifth iPhone model, is worth talking about separately.
A nano-SIM is the same card with a chip as its predecessors, but it is much smaller and, what is also important to note, a little thinner .
It consists almost entirely of a chip and has only a slight plastic edging around the edges. Because of this, the traditional method of reducing the card using scissors, previously used successfully for micro-SIMs, most often leads to chip failure with nano-SIMs.
Michelson's Large Explanatory and Phraseological Dictionary
(foreign language) - about a beautiful small object
MICRO- Wikipedia micro-
(
μ
or
µ
) is an SI prefix in the SI system (and some others) meaning a decrease in value by a million times (i.e., one millionth, 10−6).
Adopted in 1960. Derived from the Greek word μικρός ( micros
), meaning “small.” Symbolized as
mk
, or as the symbol micro
µ
(looks like the Greek letter
mu μ
).
The latter is used in international texts, and also sometimes when marking electronic parts. Examples: 1 microamp
= 1 μA = 10−6A 1
microfarad
= 1 μF (or μF) = 10−6F
Nano-sim and micro-sim - differences
As for the differences between a nano-SIM and the more common micro-SIM, they consist only in the parameters of the plastic base into which the card chip is inserted - the chip itself, in turn, will be the same in all SIM cards without exception.
Map parameters:
- Micro-sim - 15 x 2.5 millimeters (thickness 0.81 millimeters).
- Nano-sim - 12.3 x 8.8 millimeters (thickness 0.67 millimeters).
Thus, a nano-SIM card is not only smaller, but also thinner, which creates additional difficulties for those users who want to make it themselves from larger SIM cards.
Dimensions in physics
Gravity field
The magnitude of the gravitational field strength (gravitational acceleration on the Earth's surface) is approximately equal to: 981 Gal = 981 cm/s2
1 Gal = 1 cm/s2 = 0.01 m/s2 1 mGal (milligal) = 0.001 cm/s2 = 0.00001 m/s2 = 1 * 10^-5 m/s2
The amplitude of lunar-solar disturbances (causing sea tides and affecting the intensity of earthquakes) reaches
0.3 mGal = 0.000 003 m/s2
mass = density * volume 1 g/cm3 (one gram per cubic centimeter) = 1000 grams per liter = 1000 kg/m3 (ton, i.e. thousand kilograms per cubic meter) mass of the ball = (4 * pi * R^3 * density) / 3
M Earth = 6 * 10^24 kg M Moon = 7.36 * 10^22 kg M Mars = 6.4 * 10^23 kg M Sun = 1.99 * 10^30 kg
A magnetic field
1 mT (millitesla) = 1000 µT (microtesla) = 1 x 10^6 nanotesla (gamma) 1 nanotesla (gamma) = 0.001 microtesla (1 x 10^-3 microtesla) = 1 x 10^-9 T (tesla)
1 mT (millitesla) = 0.8 kA/m (kiloampere per meter) 1 T (Tesla) = 800 kA/m 1000 kA/m = 1.25 T (Tesla)
Value ratio: 50 µT = 0.050 mT (magnetic induction in SI units) = 0.5 Oersted (field strength in old CGS units - non-systemic) = 50,000 gamma (hundred thousandths of an Oersted) = 0.5 Gauss (magnetic induction in CGS units)
During magnetic storms, the amplitude of variations in the geomagnetic field on the earth's surface can increase to several hundred nanotesla, in rare cases - up to a few thousand (up to 1000-3000 x 10-9 Tesla). A magnetic storm of five is considered the minimum, and a magnetic storm of nine is considered the maximum possible.
The magnetic field on the Earth's surface is minimal at the equator (about 30-40 microtesla) and maximum (60-70 µT) at the geomagnetic poles (they do not coincide with the geographical ones and differ greatly in the location of the axes). In the middle latitudes of the European part of Russia, the values of the modulus of the total magnetic induction vector are in the range of 45-55 µT.
The effect of overload from accelerated movement - dimensions and practical examples
As is known from the school physics course, the acceleration of gravity on the surface of the Earth is approximately equal to
10 m/s2. The maximum, in absolute value, that a conventional telephone accelerometer can measure is up to 20 m/s2 (2,000 Gal - double the acceleration of gravity on the Earth's surface - “a small overload of 2g”). You can find out what this really is with the help of a simple experiment, if you sharply move your smartphone and look at the numbers received from the accelerometer (this can be seen more simply and clearly from the graphs in the Android sensor testing program, for example - Device Test).
How to cut a SIM card for a nano-SIM?
Next, we will talk about what ways there are to acquire a nano-SIM card.
On one's own
The most common method, which is convenient because you don’t have to go anywhere. However, this is also the riskiest path, because by cutting a SIM card, you risk damaging the chip: even if you “catch” its edge, you will make the SIM card inoperative. So use only very sharp scissors, and also refer to the photo of the nano-sim so as not to cut off too much plastic.
In addition, nano format cards are also thinner than others. In some smartphones, the slot is quite large and allows you to insert a thick card. But if it doesn’t fit, you’ll have to rub it a little with sandpaper or a regular nail file - not from the microchip side, of course.
Important: replacing a SIM card in a communication salon is carried out only if you have an identity document. If for some reason you are unable to present it, or if the SIM card you are using is not issued to you, it is better not to risk cutting the SIM card yourself and use the services of specialists.
In the operator's cabin
The easiest way, since you are not required to do anything other than visit a communication salon with identification documents. You can order a reissue of a SIM card completely free of charge. The SIM cards currently being produced are ready for use in devices of different models. They are a “construction set”: from a plastic base you can squeeze out the SIM card format you need with your finger. And having saved this base, you can then use it as an adapter if you need to increase the size of the card.
Squeezable SIM cards
In a special workshop
If for some reason you cannot or do not want to change the SIM card to a new one, and reducing it with scissors seems too risky to you, you can use the services of specialists in almost any workshop that repairs phones. As a rule, craftsmen have a special device called a SIM card stapler, or SIM cutter. It will turn your card into a nano-SIM in a matter of seconds without the slightest risk of damaging it. However, in most workshops such a service is paid, although it is rarely expensive.
Stapler for SIM cards
Metric system
In the early days of the metric system, man-made prototypes were used as measures of length and weight, as in previous systems. The metric system has evolved from a system based on material standards and dependence on their accuracy to a system based on natural phenomena and fundamental physical constants. For example, the time unit second was initially defined as a fraction of the tropical year 1900. The disadvantage of this definition was the impossibility of experimental verification of this constant in subsequent years. Therefore, the second was redefined as a certain number of periods of radiation corresponding to the transition between two hyperfine levels of the ground state of the radioactive atom of cesium-133, which is at rest at 0 K. The unit of distance, the meter, was related to the wavelength of the line of the radiation spectrum of the isotope krypton-86, but later The meter was redefined as the distance that light travels in a vacuum in a period of time equal to 1/299,792,458 of a second.
The International System of Units (SI) was created based on the metric system. It should be noted that traditionally the metric system includes units of mass, length and time, but in the SI system the number of base units has been expanded to seven. We will discuss them below.
What to do if the SIM card is damaged?
Unfortunately, not all electronic storage media are equally resistant to various types of damage. And if restoring data from a flash drive is a labor-intensive, but in many cases effective process, then users do not have the opportunity to “fix” a deformed SIM card.
Advice: if, when cutting a card for a nano-SIM, you find that the SIM card inserted into the smartphone cannot be read, do not rush to panic. Double-check whether the side you placed it in the phone socket is correct, and whether the chip fits tightly to the contacts. Perhaps, in trying to reduce it, you made the map too thin?
However, if you did everything correctly and the card is still not readable, the likelihood that the chip was damaged during cutting is very high. Unfortunately, now there is nothing else to do but go to the nearest mobile phone store, not forgetting to take your passport with you, and order a reissue of the card.
Why so many sizes?
There are three types of SIM cards: standard, micro and nano. Standard SIM cards are typically used on older devices such as the Galaxy S2 and HTC Desire HD.
Micro-SIMs have become smaller, because when a manufacturer tries to introduce so many technologies into one smartphone, every millimeter is important. Micro-SIM slots appear in the Galaxy S3 and S4, HTC One X, Sony Xperia S, T and X, and so on.
The next and currently relevant size is nano-SIM. Today this is the smallest type of SIM card. Nano-SIMs are used in the iPhone 5 onwards, as well as Android devices released over the past few years.
Let's sum it up
We looked at what the latest nano-SIM format cards are, as well as their features and parameters. If your SIM card is not suitable for use in a new phone, you can exchange it for a new one for free at any communication store or reduce it - either with the help of a specialist or on your own. Of course, if you don’t want to take risks, it’s better not to cut the SIM card manually, especially trying to “fit” it to the nano-SIM parameters. After all, you will have to act very carefully, and if it fails, the card cannot be repaired. To avoid unexpected problems when purchasing a phone, find out in advance the features of the model and the parameters of the SIM card it supports. You can also ask a sales consultant at a communication store about this. And if you want to learn more about the capabilities of modern phones, take an interest in LTE technology in smartphones.
Is it worth the risk?
In fact, you can skip this whole procedure by cutting out the unnecessary parts. You can use a special device - a cutter. It will shrink your SIM card to the desired size in seconds.
A similar tool can be found in all communication shops in any city. The price of such a service is ridiculous, and in some cases you won't spend a penny. It all depends on the operator. In addition, in such establishments you can change the size of the SIM card to a nano card.
To apply for a new kit, you just need to fill out an application and don’t forget to take your passport with you.
If at some point you suddenly want to use this card on an older model phone that supports older formats, do not panic ahead of time. For this, there is a special adapter into which a nano-SIM card is inserted, in which it can be safely used even in very old devices.
Nano SIM Card Adapter This article is intended to provide advice on how to replace your SIM card only, not as a guide. Consequently, responsibility for further actions and their consequences falls entirely on the owner and performer of the above-mentioned manipulations. Sources
- https://public-pc.com/chto-takoe-nano-sim-karta/
- https://sovets.net/9033-nano-sim-karta.html
- https://life-v.ru/nano-sim-what-is-it/
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- https://KakOperator.ru/lifehacks/chto-takoe-nano-sim-karta
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- https://pro-beeline.com/vopros-otvet/kak-sdelat-nano-sim
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