I am trying to set up my d'link dir 156 3g modem with airtel 3g, with my micromax funbook pro p500. When i connect the modem, it says usb storage corrupt. But still i try to create a new APN from setting/more/mobile network/create new apn. Once i enter the complete apn, mcc, mnc, etc. I am not able to find a save button. As such not able to save the apn settings and not able to connect to the internet. Please suggest how should i do it.