What is the function of the SIM card slot?

SIM cards are the small cards which contains a chip and are removable and transferable to other phones. In order for a GSM phone to work, a SIM card must be placed into it so you can access the local mobile network to place or receive calls or send texts.

What is dual SIM functionality?

Dual SIM phones allow users to keep separate contact lists on each SIM, and allow easier roaming by being able to access a foreign network while keeping the existing local card. Vendors of foreign SIMs for travel often promote dual-SIM operation, with a home country and local SIM in the same handset.

What are the connections on a SIM card?

SMS messages and contacts Most SIM cards store a number of SMS messages and phone book contacts. It stores the contacts in simple “name and number” pairs. Entries that contain multiple phone numbers and additional phone numbers are usually not stored on the SIM card.

Which SIM slot should I use?

One would choose to have one network for calls and the other for data mainly for financial reasons. The exact support for each SIM slot depends on the phone but in most cases: SIM1 supports all features of the network (2G/3G/4G/data) SIM2 can be used only to make or receive voice calls, in many cases 2G only.

Will a phone work without a SIM card?

The short answer, yes. Your Android smartphone will totally work without a SIM card. In fact, you can do almost everything you can do with it right now, without paying a carrier anything or using a SIM card. All you need is Wi-Fi (internet access), a few different apps, and a device to use.

What is the difference between SIM slot 1 and 2?

SIM1 supports all features of the network (2G/3G/4G/data) SIM2 can be used only to make or receive voice calls, in many cases 2G only.

Do SIM cards connect internet?

Most mobile phones rely on a small card called a SIM (subscriber identity module) to make phone calls and send text messages. Without it, your phone isn’t able to connect with the cellular network and can only function as an internet device (the lack of a SIM card doesn’t prevent your phone from using Wi-Fi).

Which part of the SIM card is important?

The most important part of the SIM card is its Microcontroller. It is a paper sized chip which is a typical ROM with a size between 64 KB to 512 KB. The RAM size ranges between 1KB to 8KB while the EEPROM size is in between 16KB to 512 KB.

What is Dual SIM adapter?

SIM-Extender is an adapter which allows to use two SIM cards and one micro-SD memory card simultaneously in your Dual SIM mobile phone. You don’t need to choose between having two active SIM cards or only one SIM and one micro-SD.