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“Mobile communication offers many services apart from the basic voice calling facility” 

1. Name the service which helps to locate a geographical position anywhere on the earth. 

2. Differentiate SMS and MMS.

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1. GPS

2. Differentiate SMS and MMS:

a. Short Message Service(SMS): 

It allows transferring short text messages containing up to 160 characters between mobile phones. The sent message reaches a Short Message Service Center(SMSC), that allows ‘store and forward’ systems. It uses the protocol SS7(Signaling System No7). The first SMS message ‘Merry Christmas’ was sent on 03/ 12/1992 from a PC to a mobile phone on the Vodafone GSM network in UK.

b. Multimedia Messaging Service (MMS): 

It allows sending Multi-Media(text, picture, audio and video le) content using mobile phones. It is an extension of SMS.

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