C902i sms length bug

Hy everybody. On my C902i phone I use to send sms in other language than English. The problem is when I want to use my Romanian T9 dictionary without national characters (national characters takes more spaces in SMS length than regular characters because they are not ASCII characters) and I write a sms with a word containing national characters (other then the characters from the ASCII code) my phone open a small window with "SMS 2" and mess the sms length, if I manually delete only then national character from the word the phone open a small window with "SMS 1" again and the remaining sms length is displayed correctly. This is very annoying, I changed the sound file that alerts me from SMS 1 to SMS 2 and back with an empty.3gp one but the problem with the sms length bug is still there. Also national characters in sms cost me more money, because I send 3 sms instead of one, as I wish. On my old W580i I had an option >>Writing options>>National chars.>>On/Off<< but I don't have this option on my C902i and I don't have the knowledge to make one by myself.

Can anyone please help me solve this issue? I tried LNG editor 0.0.1.3 in order to manually remove the national characters from ro.t9 file, but I can't open or edit the content of ro.t9 file and I get an error when I try to open the wdb.t9 (the original language file ro.t9 renamed as wdb.t9). I also tried to replace the HEX code of national characters with corresponding ASCII standard HEX code inside the ro.t9 file but the phone restarts when I try to write a new sms with the manually modified ro.t9. Also I tried to make a customize_upgrade.xml

<?xml version="1.0" encoding="UTF-8" ?>
<customization>
<mmi>
<settings>
<t9-dictionary>true</t9-dictionary>
<enable-national-characters>false</enable-national-characters>
</settings>
</mmi>
</customization>

but nothing happens, I still have national characters (not ASCII characters) in my sms messages and of course I still have the annoying sms length bug when I use Romanian T9 support. I hate to write sms in the old fashion way, standard abc multi-taping, this is time consuming.

Maybe someone knows how to add a function and a menu >>Writing options>>National chars.>>On/Off<< that works on C902i in order to use only ASCII characters with the support of Romanian T9 dictionary, or maybe someone has a ro.t9 file without national characters inside, that works on c902.

I trust that on this forum are few users very smart and very skilled that can help me without effort. Thank you, any help will be appreciated!

The C902i is debranded from Vodafone to Generic Adriatic, unlocked with Aerix, up to date, software: 1204-1731 R3EG004 091021, with SE Update Tool and A2Uploader.