You are using version 6.4.1 of the AdMob SDK which is non-compliant with the Google Play Ad Policy (http://goo.gl/6OZelH). On August 1st, 2014, Google Play will stop accepting updates to apps using this SDK. Upgrade to Google Play services now to avoid this deadline
八月起Google Play不允許使用獨立admob sdk的app
8月1日後，使用原本獨立sdk的app會繼續收到廣告，但Play Store不再接收使用獨立sdk的app。官方推薦使用google play service中的admob sdk.
問題是中國大部分安卓沒有play service（因爲play服務要向手機廠商收費）
Deprecating the Standalone AdMob SDK on 1 August 2014
Now that Google Mobile Ads is supported in Google Play services, we'll be deprecating the standalone AdMob SDK on 1 August of this year. Play services supports Advertising ID, and provides seamless updates to Android users.
On 1 August, the Play Store will stop accepting new or updated apps that use the standalone Google AdMob SDK. The standalone SDK does not use the Advertising ID, and will therefore be affected by the Google Play Ad Policy. Google Play services still supports devices that don't have the Google Play store installed on it. The only difference is that devices without the Play Store will not receive automatic updates.
We strongly encourage you to update your apps prior to this date. Please see our blog post for more info.
http://googleadsdeveloper.blogspot.hk/2014/02/since-joining-google-play-services-back.html
問題是中國大部分安卓沒有play service（因爲play服務要向手機廠商收費）
Deprecating the Standalone AdMob SDK on 1 August 2014
Now that Google Mobile Ads is supported in Google Play services, we'll be deprecating the standalone AdMob SDK on 1 August of this year. Play services supports Advertising ID, and provides seamless updates to Android users.
On 1 August, the Play Store will stop accepting new or updated apps that use the standalone Google AdMob SDK. The standalone SDK does not use the Advertising ID, and will therefore be affected by the Google Play Ad Policy. Google Play services still supports devices that don't have the Google Play store installed on it. The only difference is that devices without the Play Store will not receive automatic updates.
We strongly encourage you to update your apps prior to this date. Please see our blog post for more info.
http://googleadsdeveloper.blogspot.hk/2014/02/since-joining-google-play-services-back.html