Google began to restrict access to corporate services and services for users of devices on Android, not passed the so-called certification of compatibility (Compatibility Test Suite), recognized XDA. So the search giant is planning to require more smartphone manufacturers to maintain their own quality standards.
The most widespread practice of waiver of certification were among the producers of ultrabudgetary smartphone and tablets from China often do not comply with the requirements of Google. Not having the approval of the search giant, unscrupulous vendors took advantage of custom firmware, installing services the search giant manually.
If you are faced with lock branded apps and Google services, for example, as a result of installing custom firmware, you can always go back to using them after the surrender and confirm. To do this, go to the registration section of the device on the official Google site and enter the Android ID.
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