If you're unsure whether your contacts are saved on your phone or SIM, you can check by opening your contact list. If you see "SIM" next to each contact's name, the contact is saved on your SIM. If you see "Phone" next to a contact's name, the contact is saved on your phone. You can also check by entering your phone's settings and looking for the "Storage" or "Memory" section. This will show you how much storage your phone and SIM use and how many contacts are saved on each. If you have a lot of contacts saved on your SIM, you may want to consider transferring them to your phone to free up some space. You can do this by entering your phone's settings and looking for the "Contacts" or "Address Book" section. From here, you should be able to transfer your contacts from your SIM to your phone.