Having the same problem. My Windows 10 PC has SMBv1 enabled. I can access it over wi-fi with my windows 7 laptop. I used to be able to access the W10 PC with my Android phone using Solid Explorer, but recently that feature has stopped. Switching back and forth between SMB1 and SMB2 does not fix the problem. I suspect something got broken with a recent Solid Explorer update.
Having the same problem. My Windows 10 PC has SMBv1 enabled. I can access it over wi-fi with my windows 7 laptop. I used to be able to access the W10 PC with my Android phone using Solid Explorer, but recently that feature has stopped. Switching back and forth between SMB1 and SMB2 does not fix the problem. I suspect something got broken with a recent Solid Explorer update.