Did yo have mail account setup there? If yes, it checks emails every 30 mins automatically. You can reduce the frequency of mail checking to save battery. Chang the setting it from the mail preference.
【在 S*******h 的大作中提到】 : Did yo have mail account setup there? : If yes, it checks emails every 30 mins automatically. You can reduce the : frequency of mail checking to save battery. Chang the setting it from the : mail preference.