Hello @saifullah.ansari! 

Sorry to hear about the inconvenience. To get started, I’d like to ask a couple questions to get a better understanding of the situation:

• Have you always had this problem with the WiFi?
• Do you have the WiFi solution with us?
• Is it only with your phone, or with other phones that gets this problem?

• Have you always had this problem with the Wi-fi?

Yes

• Do you have the WiFi solution with us?

I have broadband with two sims

• Is it only with your phone, or with other phones that gets this problem?

There are 2 samsung phones that are having problems 

Thanks @saifullah.ansari!

• I understand that the broadband is from us?
• What router are you using?
• Have you tried with other phones(iPhone for example)?

I recommend to first off do a reset of your router

1. there should be a reset button at the back of the router, often a hole that you’ll need to use a needle or a pen to press.
2. Hold down the button for 15 seconds or until the lights start flashing.
3. After the lights are stable, turn the router off and on.

Try to connect your phone to the router again. Please come back to this topic if it still doesn’t work!