My data is disapearing. Why?

[Windows Central Question]

A few days ago, I realised my contacts were missing. I didn't do anything to the phone, I used it normaly. Now I've seen that also the messages and pictures are no longer in my phone. What is happening?? How can I solve this?

 

[RumoredNow]

It may be a sync issue with your accounts...

​Make sure they sync. Also, try a reboot.