Hi @bajo, thank you for your suggestion. We highly appreciate that. We are consolidating these together with other Flasher's suggestions and we will have it reviewed by our proper department. We are sorry to say the SIM card doesnt restrict contact network you can save, but for now we can suggest you to do this things,
- You can assign all your globe contact number to your globe SIM Card and Sun contact to Sun SIM Card
- You can also use the group feature to sort your contact easily by going to Contact --> Tap the 3 dots on upper right --> Group --> Tap the + icon in the upper right..