jplacid

Hi Manoj, I don't think this is a banned topic. The CDMA technology was originally developed by the US for Military communications in the 70s, because it is highly secure to eavesdropping and signal jamming. When the first set of CDMA phones were manufactured, the technology was 'off the shelf' and still considered to be of strategic importance that the company(s) that developed and marked it wanted to regulate the spread of the technology. Hence it was decided that CDMA mobile phones should be supplied only through the network providers. Hence there was no separation of the handset manufacturer and the network provider. The handsets freshly out of the factory were handed over to the network providers who flash programmed the handset (to their network specifications) and marketed it to their customers. This is how reliance and tata markets their handsets. Recently (a few years back) when the technology became widespread, companies started manufacturing the handsets that could be used in any CDMA network as the user pleases (Like what happens in GSM phones). A standard for the CDMA subscriber identity module was created, called RUIM (Removable User Identity Module) which is analogous to the SIM card in the GSM network. The current RUIM standard borrows heavily from the GSM SIM specification (GSM 11.11). Most of the leading manufacturers of CDMA phones support the RUIM standard. So, if you remove the battery of some of the new CDMA handsets, you would find a RUIM slot. The glitch is Reliance and TATA disable the RUIM support (by software) and market the phone, so that they can hold on to their customers. May be you could speak to Reliance or TATA and see if they can support you, which is the right way of doing things. Alternatively you could take your phone to a Mobile Phone Doctor who will hack the phone for you ( which I think you should not do !!). Hope it helps, JPlacid