Hi! Using micromax A75. Previously in communcation>>Wireless& Networks>>Mobile networks>> Network Mode>> Sim1(Airtel) or Sim2(Idea). Two options were present. Then for Sim1 I selected GSM only option.Now for the same Sim I want to use WCDMA option. But in the Network Mode I could see only Sim2(Idea).I am not able to see Sim1(Airtel). How to reset this? Please help.