Similar problem on my Xperia 10 / Dual SIM:
SFOS 3.4.0.24 Adaption 0.0.4.10
VPN credentials (UN/PW) are lost abt. one time per week +/- 2 days and/or every time if phone is rebooted.
The `remember credentials’ button on the VPN credentials input screen shows a strange behavior and often disappears causeless, followed by the phone forgets the credentials. This button is sometimes on, sometimes off while entering the cred’s and toggles if changing from the username- to the password field.
The ovpn-file seems to be innocent, it is not necessary to re-install it new to repair the VPN, but it always needs 3-4 attempts to enter the credentials new till it is been remembered by the phone for the next week.
My questions are now:
Where are the config files for the VPN (path)?
After successful establishing the VPN, can I make a backup copy of the config file?
Next time the phone forgets the credentials, can I restore them by copying the backup files into their folders where they should be?
edit:
I can report that VPN works again after a full reboot of the phone (power off / power on).
Before, restart of network and/or ‘Startbildschirm’ (start screen) had no effect for this issue and did not help. Yesterday also mobile network was gone, so I thought that there was something wrong with the mobile network and waited over the night, but today mobile network still gone… So I rebooted the phone and network back again + VPN also works again.