Caller showed as private number

[Dollyyy]

Hy anybody tell.me I am having problem everyone calling me showed as private number I dont knew why is this happening. 

[SagorSam]

My WiFi connection is very.slow always

[AndrewL]

@Dollyyy: Is this happening with Contacts saved to your Note 9? Can you try heading to the Phone app > Tap the 3 dots in the top right > Settings > Caller ID and Spam Protection, and toggle this option on?