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Helpful answers
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Jul 24, 2015 6:29 AM in response to vermsumitby jeremy_v,Hello vermsumit,
Thanks for participating in the Apple Support Communities.
It looks like any numbers not saved in Contacts on your iPhone show up as "Unknown" phone numbers.
I recommend troubleshooting these steps:
Check your iPhone settings
- Turn airplane mode on and off. Tap Settings > Enable Airplane Mode, wait five seconds, then turn airplane mode off.
Update your software
- Check for a carrier settings update.
Remove and reinsert your SIM card
If your iPhone has a SIM card, remove the SIM card, then reinsert it.
Contact your carrier
When you contact your carrier, check the following:
- Your account is set up to use your iPhone.
- There aren't any localized service outages.
- Your account doesn't have a billing-related block.
- Your calls don't have errors on the carrier system.
These steps come from If you can't make or receive calls on your iPhone and can help with the issue you're seeing as well.
All the best.
