Never been defeated before; anyone got any bright ideas?
Scenario:
T-Mobile SIM; internal Dell Broadband Card Utility. Has worked perfectly for four years.
Shows strong signal and indicates "Ready" to connect.
Click "Connect" and it indicates "Connecting", "Authenticating", but then reverts to "Ready" and fails to connect (for the last week in different 3G areas).
Sometimes shows Error 628
Facts:
Dell Diagnostics shows 'pass' for Hardware/Software/Network.
Windows Diagnostics indicates no problem with laptop.
T-Mobile indicate no problems with account (or coverage in various areas over the last week).
T-Mobile supply new SIM; same result.
Try Vodafone mobile SIM; same result.
Device Manager indicates Modem working correctly; no new drivers available.
Uninstall/reinstall modem; same result.
Try restore point prior to problem; same result.
Puzzled???
Thanks in anticipation.