could be google pinyin input method that caused this
problem.
try 搜狗输入法 oso got some minor problem. can input 单字,cannot input
词组。
As for pinyin ...... i dun use what sou gou .
I use a very simple one .
Google Play u can search under "Pinyin for tablet" , developed
by EricL , something like that .
Has been using his product since day 1 i started using Galaxy
tab 7 GT-P1000 .