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15.1.25 Why can't I choose the SIM card for making phone calls
and why does my phone make phone calls over card 1 by default?
Check whether the contact is the default contact. Currently, the third-party contact app may
take over the system contact, and the app generally does not adapt to dual cards.
15.1.26 Why can't my phone match the contact with the number in
the SMS?
Your phone can't match the number in the SMS with the contact. Your phone can only match
the number in the recipients list with the contact.
15.1.27 Why doesn't my phone play SMS tones?
Perform the following checks:
1. Check whether the SMS tone is not played on all screens (according to the Android
native design, the system does not play tones when you receive SMSs on the detailed
message screen).
2. Check whether the volume is set to mute (press the volume up side button).
3. Check whether the SMS tone notification is properly set under Message > Edit > Menu >
Settings > General > Tone.
4. Check whether you have enabled the do-not-disturb function.
5. If the issue persists, restore the factory settings.
15.1.28 Why can I read the multimedia messages only in slide
mode?
To view the multimedia messages in newspaper mode:
Go to Message > Edit > Settings > Advanced. Set MMS play mode to Newspaper mode.
15.2 App interaction exceptions
15.2.1 What can I do if I can't open the pre-installed apps (such as
call and messaging) on my phone?
1. Use the NFF tool to check whether the phone has been rooted or reformatted. If yes,
perform related operations.
You can use another simple method to check whether the phone has been rooted:
− Connect your phone to the computer using a USB cable.
− Choose Start > Programs > Run. Enter cmd. Click OK.
− Enter adb shell and click OK.
If the output is ended with "$", your phone has not been rooted.
If the output is ended with "#", your phone has been rooted.
2. If no, back up important data and restore your phone to its factory settings.