Region Codes
Samsung CSC Codes
CSC stands for Consumer Software Customisation. It is a three-letter code that identifies the region and carrier configuration of a Samsung Galaxy device. The CSC code determines which language packs, default apps, carrier customisations, and regulatory settings are included in the firmware. It also affects which firmware updates your device receives and when.
For example, a Galaxy device with CSC code XEU (United Kingdom, open market) may receive updates on a different schedule than the same device with CSC code CPW (United Kingdom, Carphone Warehouse) or VOD (United Kingdom, Vodafone).
This independent reference explains what CSC codes mean and how they affect your Samsung firmware experience. See our full CSC region directory for a searchable list of known codes.
What CSC codes mean
A CSC code is a three-letter abbreviation that maps to a specific country, region, or carrier. For example, XAA is the unbranded (open market) CSC for the United States, EUX is for Europe, and MEA is for the Middle East. The CSC code is embedded in your device's firmware and determines its default configuration. You can find your CSC code in Settings > About phone > Software information > Service provider software version.
How CSC affects firmware updates
Samsung compiles and tests firmware for each CSC code independently. When a new firmware version is released, it is rolled out by CSC — not globally. This means the same device model may receive an update on one CSC weeks before another CSC receives it. Carrier-locked CSC codes often face additional testing and certification, which can further delay updates. See our CSC region directory for details.
Common CSC codes
Some of the most commonly encountered CSC codes include XEU (UK open market), XAA (US open market), EUX (Europe), BTU (UK), DBT (Germany), and CPW (Carphone Warehouse). Our CSC directory lists hundreds of codes with their corresponding countries, regions, and carriers where known.
Frequently asked questions
What does CSC mean on Samsung phones?+
CSC stands for Consumer Software Customisation. It is a three-letter code that identifies the region and carrier configuration of your device. It determines language packs, default apps, carrier customisations, and which firmware updates your device receives.
Why do Samsung updates vary by country?+
Samsung compiles and tests firmware for each CSC region code independently. Updates are rolled out by CSC, not globally. The same device model in different countries (with different CSC codes) may receive updates on different schedules.
How do I find my Samsung CSC code?+
Go to Settings > About phone > Software information > Service provider software version on your Galaxy device. The three-letter code shown there is your CSC code. You can also find it in the firmware build number.
Can I change my CSC code?+
Changing a CSC code typically requires flashing firmware for the target region, which can void your warranty and may not be officially supported. Some devices support multi-CSC functionality where the device can switch between available CSC codes for the installed firmware.
What is the difference between open market and carrier CSC codes?+
Open market CSC codes (like XEU or XAA) are for unbranded devices sold without carrier customisation. Carrier CSC codes (like VOD for Vodafone) include carrier-specific apps, settings, and branding. Carrier CSCs often receive updates later due to additional carrier testing.
Related resources
SamsungFirmware.com is an independent information resource and is not affiliated with Samsung Electronics Co., Ltd. Firmware availability may vary by device model, country, carrier and region. See our editorial policy.