S120 connect to smartphone and OTA?

[Nils Minor]

Hi,

i want to build a BLE mesh via advertising. i asked some questions before about ibeacon and observer, how ever to clarify my question i have some additional questions:

1.) To build the mesh i need advertising and scanning functionality, is it right this is only possible by using the S120 Stack?

2.) is DFU OTA possible with S120?

3.) Is it possible to connect a device using S120 to an smartphone?

4.) Or is it possible to have a workaround for S110 to use scanning functionality ?

5.) Does nordic plan something like this in Future, to use BLE as Mesh?

Thanks and Best regards, Nils :)