Try a systems reset - remove SIM and start phone - this carries aout a mastrer reset. When message Insert SIM appears, power down, insert SIM and restart. Should cure it. I manage about 40 users with same model - it's a little "undocumented feature" ;-)
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.