DevelopersVoice.com

You can now remove the storage limitation of your SE mobile so that you can store more than 500 SMS.
This trick works by changing the SMS message store to the tpa folder, where the message limitation is not in force!

FIRST-Copy the file /ifs/settings/messaging/pref_store.txt from the phone to the computer, make a backup, then edit it to read /tpa instead of /smsdata, then delete the file from the phone then copy in the new version.
SECOND-You need to create the message store in the /tpa folder. Create the following folder structure in the /tpa folder:
/tpa/messaging
/tpa/messaging/sms
/tpa/messaging/sms/msg
/tpa/messaging/sms/FFFFFFFFFFFFFFFFFFFF
/tpa/messaging/sms/FFFFFFFFFFFFFFFFFFFF/pending
/tpa/messaging/sms/FFFFFFFFFFFFFFFFFFFF/sm
/tpa/messaging/sms/FFFFFFFFFFFFFFFFFFFF/sr
/tpa/system/messaging/sms

THIRD-Restart the phone. You can now store as many messages as you like
You can store about 1000 messages, more than that your phone will be damn slow

VERY IMPORTANT:PLEASE DONT FORGET TO BACKUP THE FILES!

I have Personally Tried this on TWO phones and it WORKED.
I u have any doubts PM me or just post it here!
Cheers!!!
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