13. Do I have to carry out the Settings of JP SMART SIM card after changing my mobile? May 25, 2020 05:07 Yes, it’s necessary to complete JP SMART SIM APN set-up for using all function on the new device. Related articles 14. What are the Pin code and PUK number? 10. My iPhone/iPad display showing that the “Invalid Sim” or “No service” after inserting the JP SMART SIM, what should I do? 2. How to set up internet data on the iOS device? 11. My phone does not display the signal after installing the sim card. What should I do? 9. Which phone numbers that Cloud Softphone doesn’t support?