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Android 5.1: How do I perform a factory reset?
The Android device will be reset to factory settings via the Android settings.
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FAQs on Wi-Fi connections
Here you will find answers to the most common questions about Wi-Fi connections.
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Why is the device not connected via USB?
This FAQ gives you information if the USB connection does not work.
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Why is the device not connecting to the Wi-Fi network?
This FAQ will help you with problems with your Wi-Fi network.
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FAQs on Meltdown and Spectre
Answers to the most common questions about the processor vulnerabilities and attack scenarios Meltdown and Spectre.
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Why does the app crash / cannot connect to the external device?
In case of app problems, follow the points in this FAQ.
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My device will not turn on, what can I do?
Please test another socket in another circuit.
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Why does the pairing via Bluetooth not work?
This FAQ will help you with Bluetooth pairing difficulties.
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Why does the connected microphone not work?
Check if the microphone is connected to the correct input.
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The battery is not working, what can I do?
Please make sure the battery or batteries are inserted correctly into your product.
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The volume is too low or no sound at all, what can I do?
If you have no sound or the volume is too low from the connected speakers or headphones?
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Why is the image of my device too dark or too bright?
Follow the points in this FAQ if your device is too dark or too bright.
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Why can't I find any results for my diagnosis (service homepage / app)?
For some error symptoms there are currently no universal answers.
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How can I fix a malfunctioning Android app?
The problem can often be solved with one of the listed procedures.
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Why does the volume of my device change automatically?
If the volume on your product changes automatically, check whether the volume buttons on the device are operable or jammed.
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Your Android 5.1 smartphone gets very warm or has a high CPU usage?
Please disconnect all data connections first and if necessary perform a factory reset.
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What can I do if my memory card is no longer recognized?
If your memory card is no longer recognized, it needs to be repaired or replaced.
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What is the maximum number of pixel errors allowed on my display?
Please check the resolution of your display (screen) to see if the number of pixel errors is still within the specified tolerance range.
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Why is my battery not recognized by the device?
If a new battery is not detected, conditioning could help.
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Why does my memory card not work?
This will tell you if your memory card is faulty.
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Featured Knowledge Base Article
What are the system requirements for Windows 11?
Whether Windows 11 can be installed on your computer depends on the hardware of your computer.
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Featured Knowledge Base Article
How do I switch out of Windows 10 in S mode?
Microsoft offers a free app for this purpose in the App Store.
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Featured Knowledge Base Article
How can you fix Windows 10 Update errors downloading installation files?
Windows 10 Update errors downloading installation files
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