Chosen Solution

i dont have any soldering tools or heat gun to replace a wifi chip how can i do this with out these tools

You cannot remove this chip without a hot air station. If the Wi-Fi IC is shorted which does occur on the 6s you can scrape the top layer and find the short. I usually try this method before removing the IC. Remember if you replace this chip you will need to un-bind the Mac Address from the NAND or you will have no Wi-Fi.