FAQ
MultiPhone 8400 DUO Does the update of Windows system to Windows 10 using Windows Technical Preview program cause void of warranty?
We kindly inform you, that Technical/Consumer Preview version has not been approved for using on our devices. Problems and errors, which are caused by using non-approved software can not be reason to repair it under warranty. If it is necessary to contact the service centre, the device diagnostics and repair can be performed ONLY if there is original operating system installed on the device. Please notice, that recovering the original software version can not be performed under warranty and causes the repair costs.
MultiPhone 8400 DUO How do I find out WiFi MAC address?
Open settings -> Select about -> Select More
MultiPhone 8400 DUO How to change system language?
Open settings -> Select Language -> Select Add language -> Select Language
MultiPhone 8400 DUO How to set up several keyboard languages of input?
Open settings -> Select Keyboard -> Select Add keyboards -> Select keyboards you want to add
MultiPhone 8400 DUO How to perform factory data reset.
Open settings -> Select About -> Select Reset your phone