Hisense U3 User Manual page 41

Phone has no sound
Check the settings status in the sound menu to ensure
that the phone is not in vibration or silent mode.
Phone hangs up or freezes
Update your software through the website.
Contacts display doubly
Contacts are saved in both phone and SIM card. Check
con-tacts saved.
App cannot be installed
• Not supported by service provider or registration
required.
Contact your service provider.
• Your phone has insufficient storage. Delete some
messages from your phone.
Phone cannot be connected to computer
• Change data cable.
• Change computer port.
Call logs are not saved
Ensure that the time is not wrongly set. Check the time
setting.
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