Share your experience!
I bought Sony Xperia Z3 from Amazon exactly a month ago. The phone doesn't start and won't even charge. The box doesn't include original charger with its power adapter. It contains only headphones and a USB cable which seems to be fake because of the poor quality. The phone may be original but I am very skeptical about that. After searching on the Internet, I think it may be refurbished. When I connect the phone to the computer, the led turns red as if it's charging and the charging logo appears on screen showing that battery is almost dead. Then screen turns black and it continues in that infinite loop. I've tried many things I found on the Internet like holding volume down button and power button together or holding the yellow button in the memory card slot area... etc but nothing seems to get the device working. It's literally a terrible experience.
When I checked the IMEI number on IMEI.info and it says that it is a Sony Xperia D6653. When I tried to update the device from sonymobile.com, I entered the IMEI number and a message prompted saying "Sorry, the information is currently not available. Please try again later.".
If anyone has an idea about this or may have encountered the same problem as mine please unlighten me and thanks in advance.
Sorry to hear this has happened, sounds very frustrating.
I would suggest performing a software repair using Xperia Companion.
Give that a go and let me know how you get on 
Hi,
Thank you for your reply. I already tried it but it did not work. A message promts saying that I have to connect my phone.
Thanks for letting me know @houssambelhadj
Can you confirm when you get this message? What part of the software repair do you get to before getting this message?
Let me know 
I have the same problem. Catch today or I started the charger. after that on the black screen "Sony Xperia" and does not leave there. I already tried to repair the software by Sony Companion but it does not work. An error message appears (UEGetPhoneInfoFailure
UE_302).
I need my cell phone urgently. Help!!!
I have the exact same problem!! I just bought the phone yesterday! It is new! What shold i do please help SoNy!! Please check the video!
Ardit, my cell phone ran again today (Sunday) of its own free will. It did not work for 3 days. Sunday, I left it on the kitchen table, 10 minutes later he had turned it on and it was extremely hot and the screen was booted and the device turned on.
I dont understand!!! You had the phone in charge or what!!! Did you have the same problem as mine? Please help! I bought it new!
No, my phone restarted with 2% of battery.
For recharge phone off, wait 5 seconds. Push Vol+ button and connect in USB port of PC/Notebook.
One blue light appears in led notification. Wait for recharge.
Ok ill try it