My iPhone's wi-fi receptor is dead. Is there a way to connect to internet on phone via USB or bluetooth? My wi-fi connect button seems to have greyed out. Last time this happened the provider replaced the phone with a refurbished phone but it's not an option anymore as the phone is no longer under warranty. 

Is there a way to have internet on my phone without using wi-fi?
What about this:
https://www.ifixit.com/Guide/How+to+Fix+iPhone+4S+Wi-Fi+Grayed+Out/22167

I think you have to change the hardware. 'Cuz there's no way except Cellular Data.