Only a few months to fulfill 25 years, this birthday will also mean the date of death of the SIM cards. Indeed, the SIM card will begin to disappear in 2017, replaced by new eSIM, virtual SIM cards that promise a new world of connectivity and ease of use for users.
With new eSIM , among other things, you can use the same phone number and services of your operator in all your Internet - connected devices (mobile, tablets, wearables, smart TV, car, etc.) or change operator in question seconds.
This is not a revolution long term. Some models of iPad Air and use their own version of eSIM .
The first smartphones with support for the new standard, just adopted, will arrive later this year. Operators are expected to begin to service next month in wearables.
A revolution that implies . To SIM cards individualized for each user and each operator Check out the video to see how they work and the different types of SIM cards:
SIM card (1FF), Mini SIM (2FF) Micro SIM (3FF) and Nano SIM (4FF)
SIM cards: a nuisance necessary
The first SIM card (Subscriber Identity Module or Subscriber Identity Module) was developed by the German company Giesecke & Devrient , who sold it to the Finnish operator Radionlinja. They were first used in 1991.
This is a chip that acts as a kind of ID card or identity document that contains the phone number, the operator and the contracted services.
Once inserted into the smartphone user can store it some data, such as phone numbers and information about your contacts.
There are different types of SIM cards with different storage capacity from 32 to 512 KB of memory to store up to 250 contacts.
In some countries like Finland personal data can be saved and used as an electronic ID card to pay or identified.
Each SIM card is unique for each phone line . The operator you hire should customize itwith your data and passwords, and add your identifying data, and the telephone line and services you hired.
This system, as is easy to deduce, has several advantages and disadvantages.
It is a unique and personalized physical device, including data entered by the operator and the user arrives for not connected to the Internet (by letter, or hand delivery) channel,security is high .
And although it has managed to hack some old protections of SIM cards, the fact is a personalized physical chip will always be safer than your virtual or digital equivalent.
But to offer this level of security and data integrity, SIM cards crawl abundant drawbacks.Since it is a removable physical device may be damaged or lost , disabling your phone line and mobile Internet.
In addition each SIM card can only be used on a single mobile or tablet , not allowed to associate more than one phone line, and can not serve more than one device at the same time.
If you change your operator or phone number you need the provider send you a new SIM card , a process that requires between 24 hours and several days. Also , your smartphone should be compatible with the type of SIM card used by the operator (Micro SIM, Nano SIM, etc.).
Advantages of SIM cards
- hardware-based protection (physical chip)
- High level of security
- secure and reliable authentication
Disadvantages of the SIM card
- It may be damaged or lost
- Difficult to extract
- It only works on one device
- It facilitates the sale of smartphones blocked
- You can not associate more than one phone number or a SIM card service
- You can not serve more than one device at the same time
- Change operator or phone number requires changing the SIM card
- Slow Renewal (change card requires hours or days)
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