Note:

Model: Galaxy S25 5G SM-S931U1 (US Factory Unlocked)

4G LTE: 24 bands — B1/B2/B3/B4/B5/B7/B8/B12/B13/B14/B18/B19/B20/B25/B26/B28/B29/B30/B38/B39/B40/B41/B48/B66/B71

5G NR: n1/n2/n5/n7/n25/n28/n41/n66/n71/n77/n78 + mmWave n257/n258/n260/n261

SIM: Single Nano-SIM + eSIM (single physical SIM + eSIM, dual SIM stand-by)

Factory Unlocked: Works with any GSM/CDMA carrier worldwide (Samfrew firmware confirms USA FKR/TMK CSC with Verizon/T-Mobile/AT&T/US Cellular/Bluegrass Cellular/Puerto Rico configurations )

✅ Perfect for USA:

All carriers: AT&T, Verizon, T-Mobile, US Cellular, Cricket, Metro, Boost, Sprint, Xfinity, Spectrum, Google Fi, Bluegrass Cellular, Cellular South, Comcast, DISH, Tracfone, Puerto Rico, etc. — 4G + 5G full compatibility

5G: n1/n2/n5/n7/n25/n28/n41/n66/n71 + mmWave — US 5G fully supported including Verizon 5G UW (mmWave)

Verizon/T-Mobile/AT&T firmware pre-configured

✅ Works great internationally (4G + 5G):

Europe: Germany, France, UK, Italy, Spain, etc. — 4G B1/B3/B5/B7/B8/B20/B28 full match; 5G available (n1/n7/n28/n77/n78 supported, but missing n3/n8/n20 for full European 5G completeness)

Asia-Pacific: Korea, Singapore, Malaysia, Indonesia, Thailand, Philippines, India, Vietnam, Australia, New Zealand — 4G full match; 5G available (n1/n7/n28/n77/n78)

Middle East: UAE, Saudi Arabia, Israel, Turkey, Egypt — 4G full match; 5G available

Africa: South Africa, Nigeria, Kenya, Morocco — 4G full match; 5G emerging networks supported

Latin America: Mexico, Brazil, Argentina, Chile, Colombia — 4G full match; 5G available

Canada: Rogers/Bell/Telus/Freedom — 4G perfect; 5G available (n66/n71)

⚠️ Important notes:

S931U1 DOES support n77/n78 , so 5G works in most international locations.

China limitation: 4G perfect (Kimovil 7/8 ); 5G 5/7 match (Kimovil confirmed ), missing n79. For optimal China 5G, China model S9310 is recommended (7/7 5G match ).

Japan limitation: 4G perfect; 5G works but missing n79 (Japanese local 5G band). For optimal Japan 5G, Japanese model S931N is recommended.

Europe 5G completeness: S931U1 has n1/n7/n28/n77/n78 but missing n3/n8/n20 which international version S931B has. 5G still works in most European scenarios but may not be optimal.

SIM configuration: Single Nano-SIM + eSIM. NOT dual physical SIMs. For dual physical SIMs, international version S931B/DS or China version S9310 is needed.

Factory Unlocked: No carrier restrictions, works with any nano-SIM worldwide + eSIM profiles from supported carriers

📌 Best for: US buyers wanting full 5G (including mmWave); international buyers who want both 4G + 5G (S931U1 supports n77/n78)

Specification: 

Standard package including:

1pc* Samsung S25 (S931U1‌) unlocked phone

1pc* manual book

1pc* data cable