I have been using mobile phones since last decade and a half and have enjoyed various models of several companies and in August end I opted with a lot of enthusiasm to buy Micromax A-100. Within a few days I knew I made a wrong choice as I found that the device would hang and shutdown when ever any in-built applications like Camera was run. The phone was neither able to handle the Micro-SD card nor any application and would switch off repeatedly. Now since 29th September it has gone to sleep for ever and it does not switch on at all. The same has been experienced by all who so ever have bought your new models such as A-84 and A-87. I feel very strongly that Micromax should withdraw these models from the market and honorably refund peoples hard earned money ASAP.