Significant financial savings are possible with dual SIM functionality, particularly for frequent travelers. The option to keep a home number while using a local SIM card overseas yonoallows users to avoid the expensive roaming fees that frequently come with traveling abroad. This feature guarantees that users can still be reached at their primary number while taking advantage of local data plans, in addition to offering financial relief. The iPhone 15's dual SIM slot setup is a simple procedure that only requires a few steps to complete.