in.raghav 3 Report post Posted December 4, 2010 Hello guys i have a doubt can some one throw light on this.we know that Operators like Reliance and TATA have dual technology license CDMA and GSM.. Is it possible to devolop a unique SIM which can be used in both gsm and cdma handsets? For ex:If i take a sim under gsm service from Reliance and suddenly i want to use it for data and there is no 3g service in that area.but Reliance is having its EVDO coverage in that area. So is there a technology or something that without changing the SIM( with same mobile number) i can use the evdo service of Reliance by simply inserting it into EVDO USB Modem? Share this post Link to post Share on other sites
anandjm 3 Report post Posted December 4, 2010 AFAIK RUIMs can be used on GSM handsets as SIMs and they do indeed work but only for international roaming. The issue being that the service provider (Tata and Reliance) should provide the necessary facility for local circles. Share this post Link to post Share on other sites
Saurav 22 Report post Posted December 4, 2010 Will EVDO RUIM work for RGSM? Share this post Link to post Share on other sites
Karthik R 246 Report post Posted December 4, 2010 Will EVDO RUIM work for RGSM? No. They are not interoperable. Share this post Link to post Share on other sites
::Hitesh:: 1,763 Report post Posted December 4, 2010 Good idea for year 2015 ! Share this post Link to post Share on other sites
