Hi, I would like buy this phone in this configuration: Sim card: Dual Normal sim Card Dual standby, Color:Titanium Gray, Language: Czech, logo: samsung logo version. Please, can you answer to me the following questions? 1. How works this model with normal dual SIM? Are they both two sim cards ready to accept the call or just one of them and I have to switch between them? How the phone behaves when I'm just browsing on the internet? Will I be able Receive a call from SIM1 or from SIM2? I do not need DSFA system, but I need to have both SIM ready for the call. 2. When I will buy a dual sim version, will I have a free slot for a memory card? How much memory So I will can have? I do not understand how much memory your phone has and how much I can extend it when I will buy a version of the dual SIM version. 3.The phone is functionally and software exactly identical to S4 (except the CPU)? reply: 1:dual sim dual standby means you can use 2 sim card at same time 2:single sim and dual sim both support micro sd card extend,max 64GB 3:the software is same as real one....