Sony Xperia U ST25i Gingerbread 2.3.7 to Official ICS 4.0.4
I am totally new to Android and now i am using Sony Xperia U ST25i Gingerbread 2.3.7 ...
My current firmware is 6.0.B.3.188
I am planning yo update to ICS 4.0.4
My Sony Xperia U ST25i is not rooted and also not unlocked bootloader
I have downloaded all flashtools and Sony Xperia U ST25i Official ICS 4.0.4 Firmware 6.1.1.B.1.10 i.e. ST25i_6..1.1.B.1.10__4.0.4__world.ftf
Now please everyone guide me that are their lags on ICS 4.0.4 after update..
1.does the phone lag much in ICS??.is there any problems after upgrading to ics?
2) Are there any wifi Internet slow issues and other issues after updating to ICS ?