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[Q] Slow I/O

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Default [Q] Slow I/O

Dear developers/users.

I have a locked BL Xperia SP C5303.
When I upgrade to 12.1.A.0.266 OR 12.1.A.1.201 the phone suddenly slow down after the flashing. The phone wake ups after few 10 seconds from sleep or when an application uses filesystem (for example installing from Play), the screen is freeze for seconds.So I can't use the phone, because when I receive a call, I hear the incoming ringing but the screen doesn't refresh it with the number only after a few seconds. I tried different methods:
- Fresh install with 12.0.A.1.254, it works, and flash all kind of newer stock roms -> fail.
- Fresh install and after root and flashed Existenz and CM10.2

All of them doesn't get solution.
So what can I do now?
Junior Member - OP
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velnens123's Avatar
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Location: Lincoln
Unlock your bootloader and install one of the CyanogenMod versions. I recommend CM10.1, because it's the most stable of all. <----- Cool website, check it out You won't be dissapointed.

Sony Xperia SP ----------------------------> Currently in use
Sony Xperia U ------------------------------> Fully working, gave it to my dad
Sony Ericsson Xperia X8 ---------------> Messed up, USB and SIM not working
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