Mate 20 User Guide-(HMA-L09&L29,EMUI11.0_01,EN)

Table Of Contents
Cancel or Disable App Lock
On the App Lock settings screen, do the following:
Cancel App Lock: On the list of locked apps, toggle o the switches beside the apps for
which you want to cancel App Lock.
Reset App Lock: Go to > Disable App Lock > DISABLE. This will cancel all locks, and
clear all App Lock settings.
Encrypt Memory Card Data
You can encrypt les stored on a memory card. Encrypted les can only be viewed and used
on your device.
1 Insert a memory card into your phone and ensure that the memory card has sucient
storage space.
2 Go to Settings > Security > More settings > Encryption and credentials.
3 Touch Encrypt memory card and follow the onscreen instructions.
During the encryption, do not restart your phone or forcibly remove the memory card.
Otherwise, the encryption may fail or data may be lost.
To decrypt a memory card, touch Decrypt memory card and follow the onscreen instructions
to decrypt
les on the memory card. Formatting a memory card can also decrypt the
memory card, but will erase all data on the memory card.
Encrypting and decrypting the memory card will not be supported if you are not logged
in to a phone as the Owner.
Safe Mode
Safe mode uses a
simplied operating system on your phone with only basic functions and
pre-installed apps available. It can be used to locate third-party apps causing system failures.
Safe Mode Functions
After installing certain third-party apps, your phone may fail to work properly. In this case,
you can enter Safe mode to check whether the problem has been caused by a third-party app
or by the system itself.
If the system is running properly in Safe mode, the issue is likely caused by a third-party
app. In Safe mode, go to Settings > Apps > Apps, nd the third-party app in question, and
uninstall it after switching back to the normal mode.
If the system runs abnormally in Safe mode, then the system is faulty. Back up your data
and take your device and proof of purchase to an authorized Huawei Customer Service
Center for assistance.
Enter and Exit Safe Mode
Enter Safe mode: During the startup process, press and hold the Power and Volume up
buttons simultaneously until the selection screen is displayed. Press the Volume button to
Settings
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