How do I retrieve my phone numbers that are lost

How to Recover Lost Contacts from Android Phone

Android Data Recovery Software not only can help you to recover lost contacts from Android phone,Android memory card or SIM Card,but also allows you restore text messages, photos, videos and other lost data on Android device,this data recovery for android works well with Samsung, HTC, Motorola, LG,Sony and more other Android device.

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• How to Recover WhatsApp Photos and Videos from Android

• How to Recover Deleted or Lost Data on your Android Phone

• How to Recover Deleted Photos from Android

• Recover Contacts and SMS from Android Smartphone

If you have backed the data before, you can recover from the backup file. If not, I think you should not add more data to your device anymore. Then, it is better for you to try some professional recovery methods, like diskdigger or Recuva, or you can also try third-party data recovery programs.

MobiKin Doctor for Android Windows Version

Recover Deleted Contacts from Android

For iPhone users, you can restore your iPhone from iTunes or iCloud to bring back contacts numbers but this will erase the existed data on iPhone. To recover only contacts from iPhone, you need to read this post. How to Recover Deleted Contacts from iPhone 4 4s 5 5s 5c

Hello Mark. Not sure what kind of phone you're using.
If it's an iPhone, here's a guide to show you several methods to get the lost numbers back.
3 Ways to Recover Deleted Contacts on iPhone