Hello everyone, am from Tanzania and I own nl720. The phone worked fine up to the day I update it with Lumia black update, the content of. Maps is gone in setting >applications, i have wp8.1 developer preview now .I need help.
Hm, if you havennt already, try a soft reset.
If that doesn't help, do a hard reset. The former is a common troubleshooting measure, and instructions are all over the place here.
The latter erases everything, potential glitches and data alike.