[VladS]

Can't speak for the Solden area in particular, but native Drei coverage in the Tirol ski resorts is not the best.

Of all the Austrian operators I've tried in the area, A1 has the best 2G/3G coverage. Their sub-brand, Bob (ex Champion) offers, in my opinion, the best bang for the buck in the Austrian market.

This being said, since you can only get from Munich to Solden by car or train, and both go through Innsbruck, here are some shops:

3Shop Innsbruck 1: Museumstraße 3 (this is no more than 10 minutes walk from the train station)
3Shop Innsbruck 2: Amraser-See-Straße 56a (off the highway, inside the DEZ shopping center)

Post Innsbruck: Südtiroler Platz 10-12 (right across from the train station)