Enabling & disabling network frequencies / bands

[bumbumone]

I've got a HTC One with Telus and I've realised that despite unlocking the phone I'm still limited in the choice of cell providers I can use if I vacation or want to switch to another provider. The issue seems to be that Telus have removed the handset's ability to operate on the 1700MHz band. Seems like a very dirty trick to me
I'm looking for a way to remove this restriction. I'm guessing that it must be some kind of software thing because I can't see HTC changing hardware in their device like this for individual providers right?
Any suggestions are most welcome.
Thanks.

 

[Paul627g]

The only changes they can and do make is the radio's per carrier. Usually a CDMA based carrier like Verizon/Sprint will have a different radio inside to support their frequencies and then same is said for GSM/international based carriers like AT&T, T-Mobile, etc...