ive had 3 htc one xs and the first 2 all had HORRIBLE wifi connection but didnt bother me because i was mostly 3g but the worst one was i wouldnt be able to connect to a wifi even when my friend was right next to me connected to the same one with full bars
1st htc one x has an orange spot on the screen and crap wifi - within the 30 day DOA terms so got a straight swap over.
2nd htc one x had a fibre (almost like a hair) under the camera lense which i didnt notice until it got right in the way and started blurring up every photo :P also bad wifi - but i didnt get the 3rd one as a result of this -.- the 2nd one broke didnt mix well with water -.- sigh
3rd one was replacement under insurance
perfect in every way the body didnt creak and the wifi was strongg
i am not sure if anyone else has mentioned this in this thread but apparently on earlier models of htc one xs instead of using a springed connection to the wifi antenna they used a lug so when the plastic case is compressed slightly (in the top right next to camera) the connection weakens because the lug cant bounce back
to be honest i am mostly making the post to get my 10 posts up i apologise if its annoying haha