I am using Samsung S24 ultra from last two months.But I have an issue with changing mobile data to SIM 1 or SIM 2, my mobile is U.S region. Which I purchased secondhand from the local mobile shop.
I'm currently living in Qatar which is in the Middle East. So I complained customer service of Samsung Electronics.And they told me that your issue could not be solved because of the regional difference. So does anybody have the solution for this.My phone have a physical sim an e-sim,I am unable to change mobile data from sim1 to SIM 2, And cannot find option in the connection settings. If someone have a solution for this, so please tell me and also tell me that is.This issue is concerning to any software hardware.
Thank you for contacting us and sharing your concern.
You need to follow the troubleshooting steps below to solve the problem. After completing all steps, check whether the issue is resolved or still exists.
This issue is related to software customization by region (CSC - Country Specific Code), not a hardware or general software bug. Samsung customizes software features based on the region where the phone is intended to be sold, and US models typically have restricted or different dual-SIM/eSIM capabilities compared to international versions.
Solution: Change the Phone's Region Code (CSC) The only known solution to enable full dual-SIM functionality, including the ability to select the preferred SIM for mobile data, is to manually change the phone's software region code (CSC) to an international version (e.g., XSG for the Middle East, or a global version like THL or INS).
Important: Changing the phone's software region code (CSC) is not officially supported by Samsung. It involves technical steps that can be complex and carry risks, including potentially damaging the device or voiding the warranty.
Alternative (Official) Actions
There is no simple setting or repair that can enable this functionality on a US model S24 Ultra, as the limitation is part of the phone’s original software configuration for the US market.
The official and supported way to ensure full dual-SIM functionality, including easily switching mobile data between SIMs in the settings, is to use a Samsung S24 Ultra model specifically designed and sold for your region (e.g., an international version with a CSC code appropriate for the Middle East/Qatar). These models have the necessary software configurations from the manufacturer.
Since your phone is a US model, its software is intended for the US market and does not include the features needed for seamless dual-SIM data switching in other regions. Official support services cannot change the fundamental regional software of the device.
