Why must networks test phones for compatibility?

[TimTDP]

I want to get HTC's HD2 but when I contact my service provider they can't tell me when it will available. I am told that they are waiting for ICASA's approval and for the network provider to test it for compatibility.
I can understand getting ICASA's approval, but why must the networks test it? Surely GSM networks comply with world-wide standards? I can take my mobile phone and use it in Europe. So Why must neworks test it for compatibility?

 

[PDonut]

Cause you'd probably be the first person to run back and blame it on the network rather than if the phone wasnt compatible or up to scratch.

 

[Amida]

All the networks are designed on standards but these standards are interpreted by developers who write the code and design the networks. I used to work for a router supplier and it's quite an involved process from where you first get the device, to get to a point were everything works 100% on the network.

 

[iDenTiTy]

It could also be because our laws concerning radio operation is different to the UK, US etc.

It may also involve various EIA processes, not required elsewhere..

 

[kvi]

every network in the world approves handsets before sale

 

[nuyork]

It's such a lengthy process. I remember back in the day when the Nokia N90 (twist camera with 2.0 mp camera) came out. It was out in Europe long before SA. I waited about 6 months before it was finally released in South Africa.

That was then. Nowadays the networks seem to be a lot quicker in testing phones, and newer phones get released within 2 to 3 months and not 6 months.

But I agree...the process takes too long.

 

[bboy]

And then vodacom will install their own firmware on the phone and make it cock up half the time anyway