Thanks for the responses. I somewhat solved this issue.
I made following configuration file for usb_modeswitch:
Run with command "sudo usb_modeswitch -c huawei_e353.conf" or whatever your filename is. Voila! New usb device with VID 0x12D1 and PID 0x14AC discovered and identified as 3G-modem.
# HUAWEI E353 (DNA)
Apparently I have to run this command every time when I plug dongle into the computer. I removed DefaultVendor and DefaultVendor lines form the file and renamed it to "12d1:151a" and put it into folder "/etc/usb_modeswitch.d/" but it doesn't really do anything. Is this location deprecated for custom configs? I'm running usb_modeswitch 1.2.3