I have a UK 3G Xoom.
It works perfectly with a UK "3" data sim.
Now I am in Kazakhstan, and have tried to switch to a local data sim. I've tried two (K-cell, Activ) sims that are specifically intended for data services, but neither works in the Xoom. Both sims are recognised, as is the network operator, but there is a "no internet connection" message. Occasionally a message arrives - presumably from the network operator - that "your phone does not accept automatic settings" or similar.
Clearly the data sims are functional, and the problem is something to do with the Xoom not picking up the network settings. I've tried uninstalling the UK "3" app (in case it somehow is locking the Xoom) and also rebooting the Xoom. No success.
Is this a Xoom problem? Surely it should allow sim-switching?