I Turn On Battery Saver But It Does Not Take Effect. Why; I Did Not Surf The Internet But My Data Usage Is High. Why - Huawei W1 Faq

HUAWEI W1 Smartphone FAQs
6.9 I turn on battery saver but it does not take effect.
Why?
Tap Settings > battery saver > advanced, and set Conserve battery. By default, battery saver comes
into effect when the battery level is lower than 20%.
6.10 I did not surf the Internet but my data usage is high.
Why?
Tap Settings > backup > photos, and check if Photos is set to Upload (may use data plan). If yes,
photos you take will be uploaded to SkyDrive no matter you are accessing the Internet using Wi-Fi or
data connection.
Issue 01 (2013-2-4) Huawei Proprietary and Confidential
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