I have lost the IMEI number of my Lumia 520, what should I do?

[Windows Central Question]

loss of IMEI number of my lumia 520

my phones flight mode was suddenly on and not getting off it also shows that IMEI number is not registered what should I do

 

[Maurizio Troso]

Re: loss of IMEI number of my lumia 520

my phones flight mode was suddenly on and not getting off it also shows that IMEI number is not registered what should I do

Soft reset: hold vol down + power 15 secs, it will reboot