The problem is, with too many relays, your phone uses all of them to get what it already has and thus eats data. This is true of all platforms.
Discussion
I'll reduce that, but I'll miss the content too if I don't have some of them
If you go into your #Amethyst settings, relays you can trim them down. You don't need more than 3 in most categories. nostr:nprofile1qqsyvrp9u6p0mfur9dfdru3d853tx9mdjuhkphxuxgfwmryja7zsvhqpz9mhxue69uhkummnw3ezuamfdejj7qgswaehxw309ahx7um5wghx6mmd9uq3wamnwvaz7tmkd96x7u3wdehhxarjxyhxxmmd9ukfdvuv did a good guide but I can't find it.