When it comes to using a SIM card in a 4G router, not all cards will work. Each carrier has different frequency bands and network standards, so it's important to check if your SIM card is compatible with the router you plan to use. Some routers are locked to a specific carrier, while others are unlocked and can work with any compatible SIM. It's also worth noting that some carriers limit the number of devices that can be connected to a single SIM card. Before purchasing a router or SIM card, do your research to ensure they are compatible and will meet your needs.
Below are the 4G bands used in each country for reference:
Russian Federation
B3/B7/B20
United States
B2/B4/B5/B12
Canada
B2/B4/B5/B7/B17
Spain
B3/B7
France
B1/B3/B7/B20/B28
United Kingdon
B1/B3/B7/B20
Netherlands
B3/B7/B8/B20
Israel
B3
Brazil
B3/B7
Chile
B4/B7
Australia
B1/B3/B5/B7/B28/B40
Ukraine
B7_
Belarus
B3/B7
Japan
B1/B8/B28/B41
Thailand
B1
Singapore
B2/B4/B5/B7/B17
South Korea
B1/B3/B5/B7/B8
Indonesia
B3/B5/B8/B40
Malaysia
B3/B7
Philippines
B1/B3/B5/B7/B41
Vietnam
B3
Italy
B3/B7/B20
Germany
B3/B7/B20
Saudi Arabia
B1/B3/B38/B40
United Arab Emirates
B3/B7/B20
Poland
B1/B3/B20/B38
Turkey
B1/B3/B7/B8/B20
Portugal
B3/B7/B20
Global Frequency Band
LTE Bands
B41(TDD2500)
B29(US 700de Lower)
B26 (US 850 Ext)
B25 (1900)
B5 (850)
B20 (800DD)
B13 (700c)
B12 (700ac)
B8 (900)
B7 (2600)
B4(AWS)
B3 (1800)
B2 (1900)
B1 (2100)
B30 (2300 WCS)
UMTS Bands
B3 (1800)
B4 (1700)
B8 (900)
B26 (850)
B2 (1900)
B1 (2100)