Hello, when I turn on my phone (Sony M4 Aqua) ... I see a screen with the words Sony (Xperia) it runs for a while, then it flashes (or turns off for + -4-5 seconds) and so it repeats to infinity. In addition, about a month ago, my screen fell and cracked ... do you think that if I sent it to the complaint, they would send it back because of that?