SIM Cards also referred as Subscriber Identity Module is an integrated circuit chip which are used for identification and authentication of subscribers on mobile phones.
From 1990 to till date many type of SIM Card are used in difference of their dimensions. Till now, world has used four different type of SIM card sizes namely Full Size, Mini Size (Standard Size), micro size and nano size.
Despite of different sizes of SIM cards, all type of Sim cards functions same.
Full Size SIM Cards
First type of SIM cards introduced was in form of full size credit card with dimensions 85.60 mm × 53.98 mm × 0.76 mm.
Earlier, Mobile phones were made very large in size and full size credit SIM Cards were inserted into them just Like credit cards.
As technology boosts, phones started being manufactured in small sizes leaving behind Full Size Sim Cards. Hence, Full Size Sim cards becomes obsolete and no longer in function.
Standard SIM Cards/Mini Sim Card
Standard Sim also referred as Regular Sim was introduced in 1996 with dimensions 25 mm x 15 mm x 0.76 mm.
Standard SIM cards comes with credit card shape with links to break out the mini sim out of it. Regular Sim is then inserted into the device. Older phones from Nokia, Samsung makes use of Regular SIM cards.
Micro SIM Card
Micro Sims was introduced in 2003 with same thickness but reduced length and width. Micro Sim Card measures 15 mm x 12 mm x 0.76 mm.
iPhone 4 was the first smartphone to use a micro sim card and later adopted by Samsung, Nokia and Sony Xperia.
Nano Sim Card
Nano Sim was introduced in the year 2012 with reduced thickness along with reduced length and width. Nano Sim measures 12.3 × 8.8 × 0.67 mm.
Basic purpose of Nano sim was to make phones slimmer and smarter. iPhone 5 was the first smartphone to make use of Nano sim and later followed by others.
Hybrid SIM Slots
You may have heard or read about hybrid SIM slots are being implemented in the mobile phones now a days. We are explaining clear meaning of Hybrid slot for our users here.
Hybrid Sim slot is one which can be used for both sim as well as microSD card. You can either put a sim card or microSD card as per your requirement.
Hybrid Sim slot is implemented to reduce open slots in the devices and for reducing thickness of the device. So phone functions as a Dual SIM smartphone if sim card is used else use it to expand storage of your device.
Also Read this : Explanation of Form Factor in Mobiles