I recently found my iPhone WiFi TV reception much less than before. I therefore consulted sites such iFixit to identify the problem. My WiFi signal is still present, mitigation should come from wear of the antenna. I tried to verify its proper position within the assembly, I checked the screws - no problem apparently. So I wanted to get a new antenna to replace it. Finding: mitigation was worse with this new antenna with the old original !! So I replaced the original antenna. I wanted to return the item, but considering its price, and the cost of return postage, it is not profitable!