Hi ,
Planning a trip with five full days on the Faroe Islands and then 4 full days in either Copenhagen or Oslo. Unfortunately I don't have the time to lengthen the trip to include all. I don't really like one nights stays if at all possible.

Connections are a bit better from Copenhagen to Faroe Islands.

My main question is SIM card that might work in both or all locations without having to buy one at each destinations.
I know most stateside cell companies have international rates. I'm with consumer cellular and couls add up quickly.
I have WhatsApp which works great back to the states. I'm only wanting DATA and some minutes/text while in my destinations.

Any suggestions , must do's, restaurants, tours at all the listed destinations would be appreciated.

Thanks in advance

I was able to use a Telenor SIM card when I visited Norway, which I believe also provides coverage in Denmark. However, I'm uncertain if it would work in the Faroe Islands as well. Some key sights and activities to consider including in the Faroe Islands are hiking the puffin cliffs on Mykines Island. In Copenhagen, walking down Strøget is a must—it's the city's main pedestrian shopping street and one of the longest in Europe, full of stores. For Oslo, hiking up to view Holmenkollen ski jump should not be missed. Additional tips that apply to all locations are to pack layers since the weather can change quickly. It's also wise to download offline maps in case there is no data access. You may also want to look into joining an overnight Northern Lights excursion if the timing aligns well with optimal viewing conditions.