Net issue

I switched off my mobile analyse the signals it's been more than 2 hours I didn't get signals I facing the same issue before one month why I got the signals after one day I tried many ways I restarted my mobile and I reset I formatted..
Can anyone help me to solve this issue
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Comments
Hi, can share the below info:
Firmware:
Go to setting => About => Software information.
Also, have you checked with your network provider if there is any ongoing issue?
Try
Dial *#*#4636#*#*>phone information
Then turn on" mobile radio power "if it is off.
Hope it helps
Peace.