iPhone 6S reboots and screen never comes back. Restore attempted with no success. This is the SECOND phone that has this problem.

My iPhone 6S 128GB is completely dead: nothing comes up on the screen. My laptop sees it and I could restore but still nothing.

This is the SECOND phone that has this problem and it occurred within 4 hours of activation:

- The first phone I activated on the 28 of September. It was working fine for 4 days, until I went jogging with it on the treadmill, using a decent armband and listening to Spotify. After 15 minutes, the music went off and the phone rebooted. I got a flickering lock screen, which was completely unresponsive. After a hard reset the screen would not come back on again. I returned it and go the second, replacement, phone today.

- The second phone was activated this afternoon and again I went jogging. Precisely in the same way it stopped working: I was jogging while listening to Spotify, it went off, flickering and then never comes back on. I tried restoring (the computer could see it but nothing came up on the screen).

So the SAME IDENTICAL problem occurred with the replacement phone exactly in the same conditions.

I am considering returning the phone and getting the money back this time. It's getting a bit ridiculous.