Sony's Answer

[ingjemr]

Dear Mr. Javier,


Thank you for contacting the Sony Xperia™ support centre.
The device may experience the following scenarios after you have updated it, or it fails to update:
The device is constantly restarting after a software update.
The device is constantly restarting after a software update failed midway into the process
The device shows a yellow warning triangle after the update and it won't go away from the screen.
The device turns on and the Sony/Sony Ericsson Logo/Xperia™ logo appears. The device then reboots and starts over.
Solution/Instruction
The software update was not successfully completed. This can happen if the update was started with a device that was not charged to at least 80%, or if the USB cable is disconnected from the device before the update is finished.

Perform a software repair using PC Companion or Sony Bridge for Mac to remedy the problem
Press and hold down both the volume up key and the power key for 10 seconds. After the notification light flashes three times, release the keys. The device turns off automatically. After the device is turned off, restart your device by pressing the power key.
If, while you try a system repair, the computer blocks the installation of the repair / update service, download, install If, while you try a system repair, the computer blocks the installation of the repair / update service, download, install
To perform software with update service:
Download and install PC Companion from www.sonymobile.com/us/tools/pc-companion/ on your Windows® computer, if it is not already installed.
Turn off the phone and disconnect it from the computer. Note! No matter what the program says, do not connect the phone until you have completed step 11.
Computer: Open the PC Companion application.
Select Start under Support Zone.
Select device Software Update and Start.
Could not find phone appears. Select Repair phone and Connect.
You are warned about the loss of your personal data twice. If you acknowledge that continuing will overwrite all data select continue.
Tick the box to confirm that you have understood that all personal data will be lost. Then click Next. The application prepares for the update and if necessary downloads required data from the web.
Select your phone model manually and then click next.
Depending on the model selected, you are asked to perform a few steps for the update for PC Companion to be able to update the phone software. Do not connect the phone yet! Note! At this point the phone must be off and disconnected from the computer.
Connect the USB cable to the computer, not to the phone.
In Xperia™: While pressing and holding down the indicated button, connect the USB cable to the Xperia™ device, and keep holding and pressing down the indicated button until The update of your device has started... appears (in some cases Installing drivers appears first).
If you failed to follow the steps correctly the phone will turn on, and Proceed with the following steps, slide down the notification bar appear. If this happens, disconnect the phone from the cable, turn it off and repeat from step 12.
Follow the instructions on the screen. When the repair is finished, disconnect the device and then start the device again.
Select Next. If the repair was successful, the message the device has been successfully updated appears. Select Finish.
If the Xperia™ device becomes unresponsive during the software repair, reset the device using a forced restart (hard reset).Then try running the software repair again.
If the problem still remains, contact your local Sony Mobile authorized service center for further diagnosis.
Note: Don't forget to back up all data on the phone before handing over the phone to the service center.
For the latest news, information and product support about Sony Xperia™ please visit www.sonymobile.com . Or you may contact our customer service line and support in Colombia at 01800-0966-080.

Kind Regards,
Leonardo Meneses Ramos
Sony Xperia™ Customer Services.

Sony don't want to admit than the trouble is ofrece the 4.4 Kit Kat software

[karlhinze]

So, what was the question?

[ingjemr]

the question was the troubles after of update the phone to kit Kat 4.4
1.Overheating easily(also in the camera app)
2.Speaker sets on low/loud alternatively
3.Quick battery drain
4.Overall lag in the UI
5.Empty call list
6.Calls ring in earpiece instead of loudspeaker
7.The tethering icon remain for several minutes after its switch off
8.Walkman app: it can't download the album info on FLAC files
9.A side from lag after exiting an app, the background/wallpaper disappear for brief moments
10.GPS takes longer to pinpoint the location

[broko]

I am very surprised that I don't have most of these problems after the update. Everything is fine, except the touchscreen, and perhaps small issues that I haven't encountered yet. If you usually use 100-200 apps - this is normal. It's too much 3rd party software. Even a good PC will start behaving strangely when you install hundreds of pieces of 3rd party SW.

What I noticed with this phone is that it was extremely buggy since day one. Many of these bugs I managed to fix with doing several factory resets and using the SUS software to repair the software condition. I presume some of these bugs are due to bad installations, lost packets when downloading the update, and general interference with all that 3rd party software. The brand's bloatware, google's bloatware, and the generic stuff you need and get with every android. It's a complete mess.

However, some of these problems keep happening, no matter what. These are:

- The HORRIBLE touchscreen issue. Seriously, the biggest and most important dealbreaker for me.

- The really underperforming Wi-Fi signal reception skills of this phone. Where literally all of my collegues manage to get reception, I can't. Really pathetic for a flagship model.

- The bad quality and clipping of the sound coming out of the speaker.

- The bad quality of the screen itself. It does badly in sunlight, and has a completely visible matrix when opposed to direct light. I can even see this under the lamp in my toilet. It's ugly and frankly, not premium at all. Not many users see this, but compare it to the Samsung displays of samsung and apple and you will know it for sure.

What do these issues have in common? They are all hardware.