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Hi
i have try to root my phone so i can move apps to SD card,but my phone become not optimal after rooting.
so,i unroot my phone again
i hope someone can tell me,how can i move apps to SD card without root my phone 
thanks a lot
best regards
that's the only way, or install a custom rom
what went wrong with your phone after rooting?
Don't forget to mark the Correct Answers & Helpful Answers
thanks for your attention 
my phone become need long time to open sms,album and everything.
yesterday i need 4 hours to open whatapp 
so i install again my software
now,it is more faster like when i buy this phone
but i can not download my favorite apps again althought my SIM card is 8g
i have try some advice to move app without root,but it was fail.
what should i do?
i am sorry about my english,i hope you understand what i mean 
thanks
so apps took quite a bit of time to be open and those apps were on the SD card ? if so, perhaps your SD card it's class 2 or 4?
my suggestion will be to get a Custom ROM android 2.3
you can find alternatives here
http://talk.sonymobile.com/message/139331#139331
ROMs available for X8 and W8 users
i am sorry,i have to create account again because my username wrote invalid
about you say ,yes that is very correct,my apps on the SD card and need time to open.
how can i know what class is my SD card?
i will try what you suggest below
thanks again 
remove your SD card and look for a circle with a number inside.