My iphone keeps deleting contacts?

My iphone has recently been deleting my contacts. The numbers still show up in my messages but not the names. It's getting really frustrating because I'm losing important numbers and I don't have time to keep backing up my contacts every other day. Is there any way to fix this?

This is unusual. Take it to the apple store or restart it.

Possible things do first, shut down and then restart it back.

Or take it to apple care, its some software cause.

This has been happening to me for a while now. Whenever I send a text it deletes the contact entirely. Now that I've updated to the IOS 8 it does it for every text. This is extremely annoying. And yes I've revooted and restored several times now. Been fighting this for over a year

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