Huawei Mate 7 Faq page 18

Huawei Mate7 Smartphone
FAQs
On the Phone Manager screen, touch Phone accelerator > Storage cleaner > Smart
scan, and follow the onscreen instructions to perform a smart scan, and clear the
application cache, system trash files, applications you no longer need and their
installation packages, and large files, such as videos and compressed packages.
Restart your phone.
If the problem persists, back up important data and restore your phone to its factory settings.
The figures are for your reference only. The actual screens may vary.
Issue 01 (2014-09-04) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
3 System settings and update
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