programbr

SIM ( Subscriber Identity Module ) is a removable card inside a cell phone that stores data unique to the user.

Generally, two types of SIM Slot are available. Hybrid SIM Slot Dedicated SIM Slot  

2G is the second-generation technology standard for broadband cellular networks.

3G is the third-generation technology standard for broadband cellular networks.

4G is the fourth-generation technology standard for broadband cellular networks.

5G is the fifth-generation technology standard for broadband cellular networks.

WiFi is mainly used for local area networking of devices and Internet access, allowing nearby digital devices to exchange data by radio waves. Wi‑Fi is a trademark of the Wi-Fi Alliance. WiFi is a family of wireless network protocols, based on the IEEE 802.11 family of standards.

NFC (Near Field Communication )  is a set of communication protocols that enables communication between two electronic devices over a distance of 4 cm or less.

Microphone (mic, mike) is a device used for converting sound into electric signal.