It's common to have the habit of storing contacts on your SIM, but it's advisable to back them up on your phone to prevent issues in case the SIM malfunctions.
Here's how to copy contacts from SIM to phone on Obi Worldphone S507:
Step 1: Select Contacts.

Step 2: Tap the three dots, choose Import/Export.

Step 3: Select Import from SIM card.

Step 4: Check the contacts you want to copy.

Step 5: After selecting, tap as shown to proceed with the copying process.

Wishing you all success.
