srpati10 :
I have a Samsung galaxy S duos S7562 dual sim mobile phone. Off late i am facing one peculiar problem. In my office, i am not able to make or receive any call through SIM1(It shows the message call ended after calling any number), where as i can make normal call through SIM2. The network of SIM 1 is OK. When i go outside of my office and make any call through SIM1, i am able to make call. But at the same time when i remove the SIM1 and put it on my old Nokia mobile, i am able to call and receive in my office also. Also my colleagues in the office are able to make call through the same Service provider as my SIM1 from the office itself. But i am not facing the problem in SIM2. I have tried to interchange the SIM1 with SIM2 also, but no improvements found. What could be the problem. Kindly suggest some solution as my SIM1 is my main no. and most of the time i spend in office
I am having exactly the same problem like you and need to look for a solution as well:
Hi, I am using Samsung Galaxy S duo GT-S7562 and having problem to receive call / calling out with one of the SIM. Below is the scenario:
SIM1 card having data plan, can call out and call in.
SIM2 card no data plan, only for calling, that is why I choose "Data Service Network" as SIM1.
SIM1 is chooing Dual Mode (WCDMA / GSM) and SIM2 is GSM only. (Because it is not allow to choose for both SIM). I choose SIM1 Dual mode because it has data plan for faster data when I am outside.
Inside the office my WIfi will be the data.
I Did not Check the Receive Incoming calls via other SIM. When I choose Dual SIM always on, only call waiting is successful but call forwarding fail.
I do not know what is the root cause, when I am outside, I am able to receive call for SIM 2 some times. Both card are same Telco and got strong signal bar in can see at my phone. using other non Duos phone no problem.
SMS for SIM2 also will not be received. I have try to swap both SIM1 and SIM2 and did the same setting so that the SIM card with Data Plan is in Service, but still the same problem will happen.
How can I solve this problem?