Many people got this issue constantly and not even a reply from Nothing? What a shame…
Mine started behaving the same a few days ago, now restarts many times in a day without any apparent reason. I have got no new updates (using 2.5.2), installed no new applications, there is no battery or free space issues. Just a momentary bright screen, and then it’s gone.
I am using the phone for over a month and it had never done this before, not even for 1 time, until 3 days ago. Now, it spontaneously restarts.
Anyway, if I had seen this thread before I bought the phone, just because of the unresponsiveness of Nothing I would surely never think of buying a Nothing product…