UMI Rome bandwidth change ?

[driftwood]

Hi
I recently purchased a UMI Rome phone, without checking first if it would work with my carrier
The phone works on WCDMA 900/2100MHz

My Carrier (Spark New Zealand )
operates on 850mhz and 2100mhz

IS there anyway of changing this ?
Many thanks

[cookiedough]

There's no way to change it. But you you still should get 2100. And the 4g should be fine too.