As the title says: The best dual SIM functionality that I know. I have tried Samsung, Alcatel and Nokia now. None of the other can be adjusted so as I need it! I can preset which SIM to be automatically used for the connection types calls, SMS and data connections. One can also adjust so that you'll be asked before any connection which SIM to use. It is also possible for each SIM choose a custom ringtone. This is useful if you want to distinguish in advance between a official or private call. With a little trick you can also create a profile "Feierabend" in which the official calls (the 1st SIM with me) are muted. Unique! Deductions there for the lack of functionality of the mail program and the lack of software update function via PC and USB cable. The unnecessary but there was only one update is back which for a long time. And because I need a mobile phone primarily for productive and not to play are such stupid features like WhatsApp etc. for this type phone rather unsuitable and little sense. And because somehow "ran into" his position since the last update, I do not want to rule out that they have even integrated ... With the old program "Nokia PC Suite" can be excellent to make a backup and play back again
