Pretty sure it'll work just fine.
Specs on HTC website say for Desire C:
Europe/Asia: 900/2100 MHz
Then you go to http://www.o2online.ie/o2/shop/phone...e-c-white/221/ and you can see they're selling the Desire C on their network.
In the little specifications box on their site it says:
GSM/EDGE: 850/900/1800/1900 MHz
HSPA/WCDMA: 900/2100 MHz
Provided of course the Desire "C" is the right device.
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