e. Interface- wired:

      1. USB (Universal Serial Bus):

USB is a standard for a wired connection between two electronic devices, including a mobile phone and a desktop computer. A cable that has a connector at either end makes the connection. One end, the one that plugs into the computer, is the same across all USB cables while the one that plugs into the mobile device can be of various types such as miniUSB, microUSB or a proprietary connector. Most of the mobile phones come with USB ports. USB 2.0 provides a data rate of 480 Mbps. It can be used for sending photos, sending music files, videos etc from devices like laptops, PDAs, PCs, Digital cameras to cell phone and vice versa.

Transferring data may require drivers to be installed on the desktop computer or laptop but some phones offer "mass storage" mode which means they appear as thumb drives to the computer and no special drivers are needed.

In addition to their data transferring application, USB cable also carry an electric charge that can be used to charge the mobile phones by connecting it to a PC or a laptop.

Now a days most of the mobile phones come with a USB cable as an additional accessory along with the CD having drivers to be installed on PC or laptop in order to use USB for data transfer.

2. HDMI (High Definition Multimedia Interface):

      It is an interface used to transmit uncompressed audio and video digital data. It is commonly used in High Definition TVs. Currently HDMI support 720p, 1080i, and 1080p with eight-channel audio support. HDMI can transmit at a speed of 5 GBPS and HDMI cable have 19 wires and it looks similar to USB cable but with more thickness.

In mobile phones HDMI ports are common for connecting it to your Television sets. There is Type A & Type B HDMI cables, Type B have 29 wires. HDMI can deliver the best image quality of any of the cable types available today. It can handle high-definition video of up to 1080p resolution at 60 frames per second, which is the most bandwidth-intensive video format currently available. Typically the maximum length for a ‘standard’ HDMI cable is about 15 meters.

f.  Interfaces-wireless:

1. Wi-Fi:

A mobile phone which is Wi-Fi enabled can access Internet through a nearby router which is wired to the web. A Wi-Fi enabled mobile can connect to wireless router at your home, office or any other place where an active wireless router is available. These places are usually called as hotspots. Some hotspots are free and some costs you money. To establish a connection between a Wi-Fi enabled mobile and wireless router login credentials are required.Wi-Fi is a global standard which means a Wi-Fi enabled mobile will work anywhere in the world unlike other technologies such as GSM and CDMA. Wi-Fi requires high power consumption when used with mobile devices. Also, Wi-Fi networks have a limited range. A traditional wireless router using the 802.11b or 802.11g standard with a regular antenna can work within a range of 120 feet indoors to 300 feet outdoors. 

2. Bluetooth: 

Bluetooth is a wireless technology that allows mobile phones to connect to other Bluetooth enabled devices like phones, laptops, PCs, PDAs, printers over short distances (up to100 meters). Bluetooth uses radio waves (in the 2.4 Gigahertz range), and is designed to be a secure and inexpensive way of connecting and exchanging information between devices without wires. Using Bluetooth on mobile phones for transferring data does not cost you any money. Bluetooth also have a quality to read out the memory card and trace the other memory card. Wi-Fi networks and wireless hotspots are almost 20 times faster then Bluetooth. Latest version of Bluetooth available is Version 4.0 Uses of Bluetooth include: sending photos from your mobile, exchanging business cards, sending voice from a headset to a mobile phone, and real-time satellite navigation using GPS.Logo for Bluetooth is  

3. Infrared:

Infrared is another feature present in mobile phones and is used for wireless transfer of data from mobile phone to other infrared enabled device and vice versa. The infrared technology works through the straight-line connectivity, which works by in sight feature. It means mobile phone should be must pointed towards the other device you wish to connect without any obstacles.

For safety reasons, infrared isn't activated by default on most phones so to use this feature you need to activate infrared, also known as "IrDA" by going to settings of your mobile phone.