My laptop is showing 4-5 wifi networks available in my area. But my iPhone is just showing 1-2 wifi networks. Even when I'm trying to add/search manually, then it is showing error couldn't find network. Anyone have any idea why?
Download the Airport Utility app from the app store and then in the settings app enable Wi-Fi Scanner.
You get a searchable list and export capabilities of the results. Once you have a scan, you can post those results in a new thread to ask what to do in your situation once you have concrete data.