Share your experience!
Dear all,
I have buy the brand new Sony Xperia Z1 today, and I was so happy to unbox it and finaly turn it on.
Every was fine and work well with the update of the app, and software (Android and walkman).
I have use it for 1 hour, with the usual reading news and email trough the wifi.
And now the Z1 is no stop rebooting, always more quicker than the reboot before and getting hot aswell. I have made a hard reboot and turn it off.
And wait 1h to turn it on. the same phenomenon occurs... I'm very disappointed by this, and i don't realy want to wait a long time to use this Z1
Regards,
Zoske
Hi, it could be a software issue, try repairing phone software with Update Service.
http://www.sonymobile.com/gb/tools/update-service/
This process will erase phone data completely.
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Ok I test this solution and look forward to you if it's working well
Thank you any way 
Let us know how it goes. Good luck! 
Don't forget to mark correct answer as Accepted Solution.
If you find the post helpful, press Kudos.
Connect your phone to the wall charger (not dock) > press and hold power & volume up for about 5 seconds > let it charge for 30min > you could update your phone
Update Service (SUS)
http://www.sonymobile.com/gb/tools/update-service/
http://www-support-downloads.sonymobile.com/Software%20Downloads/Update_Service_Setup-2.11.12.5.exe
Bridge (for Mac)
Alternatives on How to backup Xperias
The solution give me hope to fix this probleme!!
Everything is reboot, and I must redo the all welcome process.
But still the same after the process of update... the Z1 reboot again and again!!
Still very desapointed, and what thing i can do more to fix it
How a Smartphone so expensif could be like this after few hours of using??
Sony don't do some stress test before seling to the consumer
Send phone to your local Service Centre to have it checked.
More than that, I have return back the Z1 to the shop and switch to a brand new one!!
But I still afraid about the Sony product now!! And wonder if I'll make the update or not now!!
I read a lot of problems comes with the last update...
What do you think about it?
Regards,
Zoske
No idea, I don't own the Z1.
However I have reasonably good experiences with all my Sony phones. 
Sony Products are known for their Build Quality & Beatiful design. Something that sony should get very serious about:
1. Image Processing
2. Optimizing Battery Life
3. After Sales Service (India)