What Is an Isolation Test and How do I perform one?

An isolation test is a simple and effective way to identify whether a mobile issue is caused by your SIM card or your handset.

Steps to Perform an Isolation Test:

1. Remove your SIM card from the handset experiencing the issue.
2. Insert the SIM card into another compatible handset.
3. Observe the behavior on the second handset:
   • If the issue persists, the problem is likely with your SIM card.
   • If the issue is resolved, the original handset is likely the cause.

Why It’s Useful:

This test helps isolate the source of the problem without needing technical tools or support. It’s especially helpful for troubleshooting issues like:

• Network connectivity problems
• Call or SMS failures
• SIM recognition errors

If the issue is confirmed to be with the SIM card, contact your service provider for a replacement. If the handset is at fault, consider device servicing or further diagnostics.