Hi Omar
If you are going to be in isolated rural areas of France and Spain, will there be 3g and/or wi-fi at all? It doesn't matter how well your device works if there is no coverage, so you might want to check that first. I have no idea what it's like in rural France and Spain, but when I lived in rural Australia (NT), I lost phone signal five minutes out of town.
Welcome to MR. There's quite a contingent of Aussies here.