SIM (English name is Subscriber Identity Module) is a small plastic card that is attached to mobile devices such as phones, tablets , ...
The SIM card helps users to connect the phone to a service provider, where your service account information is kept including: Phone number, call history and messages.
The SIM is usually the first generation of SIMs, with the largest size of the current SIM types with a size of 25 x 15 mm. The structure consists of 2 parts: The outer part is made of plastic and the core is made of copper material.
In which, the core is the most important part because it contains the microchips and processor chips inside to store service subscriber code, identify subscriber, phone number.
In the very long time since mobile devices came into existence, SIMs have often been the norm and have been widely used.
However, nowadays, new phones are always changing and upgraded, needing to save space, so the SIM is often no longer in favor, but instead is standard Micro, Nano or eSIM.
Currently, SIM is usually only used on popular phones or cheap smartphones.
Phones use regular SIM
Micro SIM is an upgrade of normal SIM, 30% more compact with size only 15 x 12 mm.
Despite the smaller size, the Micro SIM can store more data than the regular SIM, which can be named as call history, messages, contacts.
Micro SIM has a core size similar to that of a regular SIM, so users can cut the outside of the regular SIM to become a Micro SIM and are popularly used on many mid-range smartphones or tablets.
Phones using Micro SIM
Nano SIM is the SIM card that is used quite popularly today on smartphones. This type of SIM is about 40% smaller than the Micro SIM.
Nano SIM ensures backward compatibility for use with non-supported phones by placing it in adapters for use like today's SIM and Micro SIM cards.
The use of Nano SIM helps your phone increase battery capacity thanks to the space inside, improves hardware for stronger performance, but the outer design is extremely eye-catching with thin, elegant bezel. than.
Phones using Nano SIM
Compared with the 3 above sims, the eSIM is the most special type. This is not just a traditional sim with different sizes, but its special type is an electronic sim.
eSIM is a type of SIM card that allows mobile devices to connect to the carrier's service, just like other traditional sims.
Instead of having to disassemble and assemble often, the eSIM will be integrated into the device's hardware during the production process. Functionally, it is completely like other SIM types.
Pros:
A traditional SIM card, you have to switch to a new SIM card if you change and use a new carrier on your personal phone.
As for eSIM, you can sign up to a new carrier directly because of the ability to program and activate remotely.
The eSIM is a part of the device, so it cannot be removed which means your device will have no gaps for dust, water or impurities to creep deep inside the hardware to make the device more durable over time. time.
When you move abroad, you do not need to buy a local SIM to install the device anymore, but the local operator will have temporary transfer methods during your travel or business trip.
In general, each type of SIM currently serves the needs of the user well. Talking about the future, eSIM can be a new technology trend so let's wait for this revolution with WebTech360!
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