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Huawei Mate 9 (Porsche Design)
Device specs
- Display
- 5.5" AMOLED 2560×1440
- Battery
- 4,000 mAh
- Release year
- 2017
- Operating system out of the box
- Android 7 - EMUI 5
Matching accessories*
Top guides
Quick access
The most popular guides for this device.
Apps & Installation
Allow App Installs From External Sources
Trying to install an APK outside the AppGallery or Play Store often gets blocked by a security warning on Huawei phones. This happens because the permission to install apps from external sources is switched off for each app individually. Until you enable it for the specific app you used to download the file, sideloading stays blocked, even if the file itself is safe.
OpenSecurity & PrivacyEnable or Disable Private Browsing Mode
If your browsing history, cookies and search suggestions keep piling up on your Huawei phone, the built-in browser is probably still running in normal mode instead of Private mode. Private mode darkens the interface and wipes out history, cookies and open tabs the moment you close them, but it will not hide your activity from your mobile carrier or the sites you visit. Knowing exactly where this switch sits saves you from clearing your history by hand after every session.
OpenNetwork & ConnectivitySet Default SIM for Calls
When your Huawei phone runs two SIM cards, calls placed through Quick dial or other shortcuts do not always go out over the SIM you expect. Without a fixed default calling SIM, EMUI picks a card automatically, which can lead to unwanted roaming charges or calls made from the wrong number.
OpenApps & InstallationUnrestricted Data Access for Apps
If a messaging or sync app on your Huawei phone only updates over Wi-Fi and stays silent on mobile data, background data restrictions are usually the cause. EMUI applies data-saving rules per app, which can delay notifications or block downloads until you open the app manually. Unrestricted data access removes that limit for individual apps.
OpenNetwork & ConnectivityDelete Saved Wi-Fi Networks
If your Huawei phone keeps jumping onto an old guest network instead of your home Wi-Fi, a leftover saved connection is usually to blame. EMUI remembers every network you ever joined, including outdated passwords and networks you no longer use. Removing the wrong ones fixes auto-connect issues and frees up the list for a fresh setup.
OpenCalls & MessagesEnable or Disable Call Barring
Roaming abroad often means every incoming call and every accidental international dial gets billed at premium rates, even calls you never answer. Huawei phones let you block specific call types at the network level instead of just muting notifications. The setting sits deep in the Phone app and is easy to miss if you have never needed it before.
OpenApps & InstallationSet Default Browser App
If tapping a link in a message or email keeps opening Huawei Browser instead of Chrome, Firefox or Opera, the system default app was never switched. EMUI decides which browser handles outside links independently of which apps you have installed. Downloading a new browser from the Play Store alone does not change this setting.
OpenNotifications & FocusFlip to Mute Timers and Alarms
If an alarm or timer keeps ringing even after you grab the phone, flipping it face-down usually should silence it instantly. On many Huawei phones this motion gesture is turned off by default, so the ringing continues no matter how you place the device.
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