The iOS was originally developed as “the iPhone Operating System”, but has since been redesigned and improved to effectively operate as the single operating system of the whole Apple product line that has internet or mobile applications in it.
The most common variation of the iOS is the iOS X, which is the desktop version of the mobile operating system and is currently used in the latest generation of the Mac computers. The X denotes the Roman numeral ten and indicates the current version of the operating system.

As mentioned before, the iOS is the single most popular and efficient competitor for Android, as the Symbian has been shut down by Microsoft and their own Windows Mobile operating system is just not good enough (well played Microsoft, well played). In the desktop operating system market however, Microsoft has managed to become and stay on top as the most popular operating system with their product, Microsoft Windows. It is the standard operating system in the PC market, but the iOS X has a strong following due to the success of the Mac computers in the recent years. Linux has also improved its existence as an operating system, mostly due to it being free and full customization to your needs.

Apple advertises iOS as an easy to use and secure interface, which is true in its own sense, but it also lacks the customization that Android grants its users. In the more recent years Apple has gathered such a wide following and loyal fan base that the only Android OS manufacturer who has been able to create a product line that amasses such following as the iPhones is Samsung. They have managed to lure the customers to their Galaxy line of mobile devices and got them hooked on the quality and wide amount of features. They have also implemented their own version of the Android user system, which is what differentiates the iOS and Apple from Android and the manufacturers using it as the operating system in their devices.
All in all the iOS is simply put a highly sophisticated operating system for Apple phones, Tablets, the iPod touch and their Mac computers.

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For those of you who actually are able to differentiate a SIM card from a biscuit, good for you. These days there are many different variations of the traditional credit card sized SIM card. In today’s world of ever yet smaller and slimmer mobile phones, the SIM cards were forced to evolve into something smaller and slimmer as well, and they have.

The “Subscriber Identity Module”, the SIM card to its friends, is a piece of technology that identifies you as the caller or the sender, depending on if you are making a call or sending a text. The standard size of a credit card used to be the standard when phones were the size of your PC monitor. These days they are a lot smaller and fit into that nice and small phone of yours.

Now as you can see, there has been a lot of progress in making the SIM cards smaller and more capable over the years, and with the latest invention of the Nano-SIM card, even the thickness has been reduced. Now back to the original question regarding the type of SIM card you currently possess. As you can see, with the modern phones on the market, the Full-size SIM card is pretty much obsolete, and thus we can rule that one out. Now, the question is whether or not you have a phone from after the year 2003 or not, because 2003 is the year when the Micro-SIM card was invented and thus having a mobile phone from the year 2003 or later indicates the choice between the two most commonly used ones: the Micro-SIM and the Nano-SIM. The difference between these two is not that obvious to the human eye, but it is still easy to identify the type of the SIM card. For one thing, you could just simply measure it.

The Nano-SIM card was brought out to the public and went into distribution by the mobile phone operators in 2012, so again, if you own a phone from the year 2012 or later it is highly likely that you have a Nano-SIM card inside your phone.

The Embedded-SIM card has not quite struck out as a success in the mobile phone markets, as then you could not change the carrier you pay for your calls quite as easily as swap in swap out the SIM cards. It does however provide a higher security level, as there is no easy way to remove the SIM card and thus your contacts are safe within the mobile phone.

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