Will this work in the UK and Canada on EE and Koodo networks? Is it dual sim?

Yes. dual sim.

Please check below with your network providers

4G bands 4G FDD-LTE: B1(2100),B2(1900),B3(1800),B4(AWS),B5(850),B7(2600),B8(900),B12(700),B13(700), B18(800),B19(800),B20(800),B25(1900),B26(850),B28(700) 4G TDD-LTE: B34(2010),B38(2600),B39(1900),B40(2300),B41(2500)
5G bands 5G Sub-6 FDD: N1(2100),N5(850) 5G Sub-6 TDD: N41(2500),N78(3500),N79(4500)
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