I'm considering buying a Samsung Galaxy Tab 8.9, with the main use as a portable "table phone". It has GSM phone functionality built-in, but not enabled out of the box. I'm very distrustful of devices where you need to activate such a key functionality using third party software - it makes me suspect it is not going to work 100% reliably.
Is asking about whether GSM telephony is feasible on the 8.9 tab, and what peoples' real-world experiences are with it, on-topic on Android.SE? It's kinda related to Android, but I thought I'd check first.