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Asked 126 months ago by nayil  
I would like to upgrade my pinyin tainer.I already have a account of trainchinese dictonary. 

When I press the upgrade button I can see the choises google play  button and trainchinese button below, but  the buttons are not working.
This question has been viewed 12 times.
nayil says:

I use Google Play

My sellphone is HTC ONE SV

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