I'm looking to buy a SIM card with a data plan. What company has coverage in the Pyrenees?
Any recommendation for a plan with 3G coverage there?
I used Vodafone (they had 3G) and it worked fine in Spain. Once I made it to Andorra, I was roaming and was told what the charges would be. I assume it would be the same had I continued on to France. The rate was 10 EUR for unlimited Internet which cost something like 3.15 EUR per week. They credited the full 10EUR to your account. Once I hit 20MB/day, it throttled me, but I could still access the Internet. I also had phone as well as texting.
Just stop at a Vodafone place anywhere in Spain. I was in Spain for almost two weeks and I had Internet the whole time without any issues.
There is also Movistar, but I don't know if they had 3G. They had 20 EUR for 500MB of data.