I am wondering if my T-mobile G1 (bought in usa) will work with Koodo mobile (which uses telus's network).

Thanks!
I believe they are HSPA 1900.

the g1 uses hspa 2100 (does this change anything?) and it uses gsm
its actually 1800/2100 and telus is 1900
Actually, it says the HSDPA+ is 1700/2100 and full HPSA. does that mean it works with any HPSA network?