- 1. Download the music to your phone.
- 2. For some models, you can just keep pressing the music for seconds, and the secondary menu will pop up automatically ,you can choose "set it as ringtone" .
- 3. For other models, you need find the "Ringtone" folder in your document management (file manager) , put your music in the "Ringtone" folder first , then you can go to setting>sounds to set it as your ringtone.
- 1. IF or not all the contacts cannot be called. if yes, go to step 2. If not, maybe not phone issue.
- 2. Make sure SIM account has enough balance and the place have good signal.
- 3. Check whether phone is on 4G only mode, if yes, change to other modes.
- 4. Try to reset factory settings, but remember to take data back up first.
- 5. Visit the nearest customer service center for further check.
- 1. Make sure the new contacts are added in the correct way.
- 2. Try to reboot the phone or reset factory settings, but remember to take data back up first.
- 3. If problem remains, visit local customer service center for further check.
- 1. Reboot the phone or download some third part camera related App.
- 2. Try to reset factory settings, but remember to back up the important files.
- 3. Update phone system to the latest version.
- 4. Try to visit local customer service center for further check.
- 1. Make sure you set the focus correctly.
- 2. Check camera lens to see whether it's dirty, clean it.
- 3. Check the inside of camera to see whether there is vapor. Visit the nearest customer service center to clean it. Take important data back up before you go.
- 4. Check the software in customer service center.
- 1. Back up important data and restore your phone to factory settings, or update the system to the latest version.
- 2. Visit local customer service center for help directly.
- 1. Try to visit local customer service center for further check.
- 1. Make sure you're using the original charger, try other original charger to see whether problem comes from your charger.
- 2. Check your charging port to see whether it's get stuck by dirt or other foreign objectives.
- 3. If nothing's wrong with the charging or the port, then try to visit local customer service center for further check.
- 1. Check the voltage/current of charger you use,make sure them match the specifications with the requirements of the phone.
- 2. Visit local customer service center for further check.
- 1. Use the USB cable to connect your phone to your computer.
- 2. Go to phone Settings>Wireless&Network>More>Tethering & Portable Hotspot>Select USB tethering.(There may be subtle variations in different versions /models.)
- 3. After driver is installed, your phone will be connected to the Internet automatically.
- 1. Use the USB cable to connect your phone to your computer.
- 2. The notification bar will shows some options that you can choose to charge phone only, or use your phone as storage.
- 1. Download and install 360 mobile phone assistant or other android assistants.
- 2. In 360 mobile phone assistant, open the file management page, find and select the files that need to upload, choose the menu of “sent to the computer", and transmitted them to the computer folder.
- 1. Go to the Settings and go to Apps and delete this app " Google Play Services for Instant Apps "
- 2. After you delete it the Play Store will open and respond.
- 1. Make sure phone has access to strong and stable network first.
- 2. Make sure the videos are still valid, try other videos.
- 3. Clear cache and try to play videos again.
- 1. Reset factory settings, but remember to take data back up first, format the SD card, or try other SD cards.
- 1. The first thing to do is to backup all your data on your SD Card to your PC or transfer it to another device because your SD card would get formatted during the process.
- 2. Insert an SD Card inside your device and wait for it to get detected.
- 3. Open your Settings >Storage > Storage settings >SD card
- 4. You can now successfully move your applications to SD Card. To switch between SD Card and the internal.choose your preferred storage and migrate data.
- 1. Download encrypted apps in Play Store. Like Encrypt File Free.
- 1. Reset factory settings, but remember to back up the important files.
- 2. If the problem remains, try to visit local customer service center for further check.
