[Sprint HTC One (M7)] tnEVo:
Please Read before "Flaming!" - I do NOT work for Samsung!!! I also did not find an ongoing thread for this issue... so If I missed an already open thread, forgive me. Also, please excuse the length of the post... trying to describe this as best I can to get feedback from others!! (Mainly, do I need to exchange this ONE, no pun intended.)

I picked up my ONE from BB yesterday - Sprint Version - Serial FA##BS - FYI

After messing with it for a bit I noticed the signal would jump all over the place, from 1-6 bars. Normally my EVO LTE would jump from 4-6 bars, but not nearly as much movement as my new ONE.

I did not want to put the words "Death Grip" in the title as I'm sure I would be immediately flamed left and right! But unfortunately, it seems that my phone does indeed have a grip issue.

So, here is what I have figured out so far and I might make a video to better describe this if need be...

First and foremost, I believe this to be a LEFT Handed problem, as I am left handed and tried holding the phone in the same way in my right hand without major issue. I normally hold my phone from the middle, to the bottom of the device... thumb pointed up along the left side of the phone. Index finger on the back pointing towards the top right of the phone. Middle and ring finger curled around the phone near the bottom third of the phone and pinkie underneath for balance.

Again, I am using my left hand for this and when switching to my right hand, I do not have the same signal loss. While looking at my phone and the position of my hand, I noticed that the fleshy part of my palm, near my thumb was "gripping" the bottom left corner of the phone. Hence touching both the back and front aluminum parts as well as covering the white plastic in that corner.

This led me to a few tests, of course by this time I already thought it could be a left/right issue so I held the device in what I guess could be a "pinch" position. Gripping the very bottom left corner of the device with my Index and Thumb, middle finger underneath for balance. (Please be VERY careful if you try holding your phone this way, do so above carpet or soft surface at the very least!!!)

Holding the phone this way really took a toll on the Network Signal, bringing it down (up?) as much as 18-24 dBm (From 5/6 bars to 1/2 bars)

I tried all of this using my right hand, but really saw no defining difference other than it felt weird! But signal seemed fine.

Early in my testing I decided to hold the phone up high, again left handed, and noticed random 1 bar WIFI signal loss. But the Network Signal was fine. After going back and forth with it, trying to recreate a similar holding position as I normally hold the phone, I turned the phone upside down. This gave me my "regular" grip and consistently dropped WIFI 2 bars. Although I have not been able to get the "pinch" grip to do really anything up top.

WIFI seems to be less affected, especially as most won't hold the phone there unless in portrait mode. Which I have not worried taking notes on... yet! So far, just north/south testing.

Another thing with the WIFI, I did these tests in 3 different places in my house and when I was at my desk 4 feet away from my router, I had no issues. But in the back of the house (Bedroom/Bathroom... where you need wifi!!) is where I saw the effects.

Network signal seemed to be affected everywhere, but less when outside.

Also, it usually took about 5-7 seconds for the effect to take place when switching holding positions, but the signal would hold steady (whether good or bad) for long periods of time.... minutes in this case.

I have included a few pics, and will do a video if need be, but would love some REAL feedback from other ONE owners. And if you do reply, please let me know where you got your one, I.E. Sprint, from HTC, At&t, other, etc.