<Li> 1983--First analogue Stored Programme Control exchange for trunk lines commissioned at Mumbai . </Li> <Li> 1984--C - DOT established for indigenous development and production of digital exchanges . </Li> <Li> 1995--First mobile telephone service started on non-commercial basis on 15 August 1995 in Delhi . </Li> <Li> 1995--Internet Introduced in India starting with Laxmi Nagar, Delhi 15 August 1995 </Li>

When did cell phones become popular in india