You can easily save your contacts from SIM to phone memory.
Here's how to copy contacts from SIM to Mobiistar Lai Zumbo S Lite (2017):
Step 1: Access your contacts, then select the three dots to go to Import/Export.
Step 2: Select SIM memory to copy to phone memory.
Step 3: Select contacts then OK to start copying contacts.
That's it, you've completed the setup. Wishing you success!