Replaced the router and all works now.

@Sunshine thank you for your response. I'm located in Israel. My sim card carrier is We4G, but I also tried with a Pelephone carrier (They work perfectly on my phone). This issue started out of the...

Hi I bought this router a week ago and im working with a im card. While connected with an ethernet cable directly to the router performance is good I have a good wifi signal Led status show all...