Share your experience!
Hi,
I've updated my Xperia SP C5306 to latest version 12.1.A.0.266, and since the update, my phone has many bugs. Apps such as Messenger or Walkman slow down and crash. On top of that, the keyboard works correctly only few times now and then. I have tried to re-install the update, reboot my phone etc., but nothing changes. I was wondering if anything can be done for my phone to work properly, or if I can go back to the older version.
Really exhausted to look for solutions... 
try to factory reset your phone...
or , upgrade to new Android 4.3 (12.1.A.1.205) for xperia sp...
the android version you mentioned is buggy... try the new one
good luck!!!
Thanks guys, I'll have to wait for the update though, since I'm with Fido in Quebec. But thanks for the advice, I'll arm myself with patience :smileysmileythumbsup:

Hi everyone,
I am curious if there has ever been a solution to the issue for the sony xperia sp c5306? I have delt with the glitchiness for a while consistently checking for updates. According to Sony Companion I am running the latest software version 12.1.A.0.266. But after a bunch of research I have read that there are three upgrades above my current version. Did sony release them for other versions and not 06? I have tried system format and restore and even doing the repair through sony companion but nothing seems to fix the issues. I also looking into running a custom room to fix the issue (I used this method with another phone to get a clean/bloatwareless version of android) but unfortunately the carrier has locked out the bootloader. I really doubt it is related to the actual hardware of the phone and rather just software. All in all I am just frustrated with this phone and very displeased. I am hoping someone can help fix this issues as I really do not want to have to buy another phone. And if I had to I couldn't take a risk on a Sony!
Regards,
Blair
Hey!
Did you found working solutions for a problem?
I have here xperia SP with 12.1.A.1.205 and it still is slow and buggy. I see there is update available (12.1.A.1.207) which is not available for auto update, which I could set up manually, and I am interested whether it would help at all or have anyone tried that.