scottjpalmer: Compare it loosely to buying a Teac TV or a Panasonic one.
One costs twice as much but they have similar specs, similar warranty, blah blah blah.
You may get exactly the same performance, support, lifetime, etc from it, but if you don't you accept it has having got what you paid for.
That's not what the various acts of parliment governing fitness for purpose, say.
My rights in law are in no way invalidating by Telecom marketing a more expensive device.
I am entitled that the ZTE device meets all relevant specs it is marketed as, and is fit for purpose. Lifetime of the device is not guaranteed by any warranty offered in itself. That is down to what a resonable person would term reasonable.