WiFi Irritating issue.. !!

[vishnupv009]

My S9+ keeps disconnecting wifi in every 2-3 minutes. No issues with any other phones. See the attached image (See wifi icon). I did network reset, changed wifi password, wifi name, etc but still its not resolved. My router is Optilink. Its a wired issue. Samsung please help me...

[vishnupv009]

I changed my router to newest model then fixed this issue.

[Kusalava]

Hi bro. I have a very similar problem like this one only. My wifi keeps disconnecting or it just says "Internet not available". And it is particularly happening in my Galaxy J7 pro only. Mine is also an optilink router. Can you please tell me a solution for this other than changing the router. Is there any setting in Optilink router to solve this issue? Please do answer. This problem is irritating me from months and i found no solution.

[vishnupv009]

I changed my router, then It worked.

[Kusalava]

Ok bro. To which model did you change?. Can you please give me the details regarding it.