Huawei P30 Pro Installationsanleitung

FAQ

Why does part of the LCD screen become yellow, and the bottom portion dim, while the screen

colours and brightness of different areas uneven?

All Huawei products undergo rigorous display testing to ensure that their colour and brightness

fluctuations are properly controlled. This is normal and does not indicate an issue with your

phone.

To meet the preferences of different users, colour temperature adjustment is available. Go to:

EMUI 5.X and earlier: Settings > Display > Colour temperature

EMUI 8.X: Settings > Display > Colour mode > Colour temperature

EMUI 9.0: Settings > Display > Colour & eye comfort > Colour mode & temperature

Magic UI 2.0.1: Settings > Display > Colour mode & temperature

then touch or drag the spot on the colour circle, or touch Warm or Cold to adjust the colour

temperature to comfort your eyes.

What should I do if the middle area of the screen is insensitive, intermittently responsive, or

unresponsive to touch commands?

Perform the following to troubleshoot:

1. Ensure that you perform screen operations correctly when you are using the virtual

navigation keys. Touch the keys or icons precisely and keep in fingertip in contact with

the screen when swiping.

To prevent touching an app icon by mistake when you are using a virtual key, a narrow touch

dead-zone is set between app icons and the navigation bar. In addition, a touch dead-zone is also

set in the middle of the three navigation keys (as shown in the following picture). Therefore,

make sure you touch the centre of the virtual navigation key. If this affects your normal use, try

switching to the front navigation button.

*The picture shown is for illustration purpose only. The actual screen prevails.

The navigation bar may be unresponsive when you touch it quickly and repeatedly. This is a

built-in Android feature to help avoid misoperations. It is recommended that you avoid touching

virtual keys in rapid succession.

To prevent you from accidentally starting an app, you can only open apps by touching the centre

of an app icon.

2. The screen may become insensitive to your touch commands due to sweat, water, or dirt

on your finger or the screen. It is recommended that you keep your hands and phone

clean and dry.

3. Check whether the screen protective film is too thick. Tempered glass film may affect

touch control. It is recommended that you use the standard screen protective film

provided by Huawei.

4. If the touchscreen does not respond when you answer a call, it may be because you have

enabled Touch-disable mode before putting your phone into your pocket or placing it on

a conductive desktop. If so, press the power button to turn on the screen and resolve the

issue.

5. Ensure your Internet connection is stable. If your Internet connection is too slow, apps

will become unresponsive. Switch to another Internet network and try again.

6. Having too many apps running at the same time may cause the touchscreen to become

unresponsive. If so, clear the apps or restart your phone. If your phone is responding

slowly, it may exhibit the following behaviour: Game apps load slowly during startup;

playback of videos or songs is not smooth; a black screen or erratic display occurs during

video playback; the phone does not respond and displays an error message when an app

is opened or a feature is enabled. If any of the aforementioned issues occurs, close the

background apps that are not in use, use Phone Manager to optimise the phone system, or

restart the phone. The problem should then be resolved.

7. Regarding external environmental factors:

If there is a strong electromagnetic field nearby (such as one created by a microwave oven,

electromagnetic oven, or power station), it is recommended that you move to a position far away

from the electromagnetic field, and then check whether the problem is resolved. Your

touchscreen may malfunction if there is a strong electromagnetic field nearby.

If the ambient temperature is abnormally high (higher than 50°C) or low (lower than –20°C), it is

recommended that you move to a different location and try again. Your touchscreen may

malfunction if the ambient temperature is too high or too low.

8. If the touchscreen becomes insensitive only when certain third-party apps are used,

update your phone and the apps to the latest version. You may experience some of the

following touchscreen issues when using third-party apps:

a. The WeChat app requires a relatively large touch input to register a left or right

slide. If your touch input is too small, WeChat may not register the input.

b. The WeChat comment icon has a small touch target size, therefore, it is possible

for your input to not be registered if you don't touch the icon at exactly the right

spot.

c. The phone screen freezes due to compatibility issues with a third-party desktop.

Design faults in third-party apps can cause touchscreen insensitivity. Huawei will actively work

with third-party app developers to solve the problem, so please check back regularly for third-

party app updates.

9. Back up your data, restore your phone to factory settings or update your phone system to

the latest version, and try again.

The Touchscreen is unresponsive to touch

If the touchscreen is lagging or unresponsive, do follow the steps below:

If the problem occurs in a certain app, it may be caused by the app itself. It is suggested to

enter your feedback in the app.

If the problem occurs in every app that you use, follow these steps:

1. Check the screen

Make sure your screen is clean and dry, as well as free from any debris that may cause

the screen to be unresponsive. Wipe the screen clean and try again later.

If a protective film is in use, make sure the film is not causing the unresponsive problem.

Remove the film and try again. It is suggested that the protective film in use is not too

thick.

2. Check the settings

If the Gloves mode is switched on, the touchscreen becomes extra sensitive. When you

touch the screen without glove, the screen may not respond properly. It is suggested to

switch off the Gloves mode when you are not wearing gloves.

Go to Settings, search for Gloves mode (The Gloves mode is not available on certain

devices, skip the step if not applicable.)

Check the accessories

If the phone is plugged in with a charger or data cable of other brands when the

unresponsive problem occurs, use a standard original Huawei charger and data cable

instead, and try again.

Check the environmental problem

If the phone is used in a temperature lower than -20°C or higher than 50°C, abnormal

temperature may cause malfunctions of the touchscreen. Please use the phone in an ideal

temperature (0°C to 35°C) condition and try again.

If the phone is used in a strong magnetic field (with microwave, induction cooker, power

station, etc. nearby), the magnetic field may cause malfunctions of the touchscreen.

Please avoid using the phone in such places.

Why does the screen jitter, flicker, or produce a colour cast when I wipe, swipe, or tear the protective

film off the screen?

Cause:

1. When you quickly wipe or swipe the screen, static electricity is generated, which affects the

deflection of the liquid crystal molecules in the screen and causes the screen to jitter, flicker, or

produce ripples or colour casts.

2. When you quickly swipe the screen while using a non-standard protective film, the film is

likely to generate static electricity due to dryness or low-quality material and cause the screen to

jitter, flicker, or produce ripples or colour casts.

Solution:

When wiping the screen or removing the protective film, you are recommended to turn off the

screen, and use a soft cloth.

Vertical colour stripes appear on the phone screen

Cause:

Profile GPU rendering is enabled.

Solution:

1. Follow the steps below to resolve the issue:

EMUI 5.X: Go to Settings > About phone. Touch Build number seven consecutive times

(enter the lock screen password if required) until the "You are now a developer!"

message is displayed. Then return to the Settings screen and go to Developer options >

Profile GPU rendering > On screen as bars > Close.

EMUI 8.X or later: Go to Settings > System > About phone. Touch Build number seven

consecutive times (enter the lock screen password if required) until the "You are now a

developer!" message is displayed. Then return to the System screen and go to Developer

options > Profile GPU rendering > On screen as bars > Close.

Magic UI 2.0.1: Go to Settings > System > About phone. Touch Build number seven

consecutive times (enter the lock screen password if required) until the "You are now a

developer!" message is displayed. Then return to the System screen and go to Developer

options > Profile GPU rendering > On screen as bars > Close.

2. If the issue persists, go to:

EMUI 5.X: Settings > Apps

EMUI 8.X: Settings > Apps & notifications > Apps

EMUI 9.X: Settings > Apps > Apps

Magic UI 2.0.1: Settings > Apps > Apps

Select Settings from the app list, then go to Storage > Clear data.

3. If the issue remains unresolved, back up your data, and go to the following path to restore

your phone settings.

EMUI 5.X: Settings > Advanced settings > Backup & reset > Reset all settings

EMUI 8.0 or later: Settings > System > Reset > Reset all settings

Magic UI 2.0.1: Settings > System > Reset > Reset all settings

Note: Do not revise other Developer options. It is recommended that you disable Developer

options after the issue is resolved.

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