after changing the battery of an Iphone 5 I have encountered the following problem:
No locates the SIM, and the message "Searching", this message does not change, remove sim or leave it inside does not work.
After resetting the network settings, has not worked for me.
Restore the original battery has not worked.
The solution was simpler than that, we have to connect the iPhone to wifi and restart the IPhone for 10 seconds by pressing the Home and Power button until you see the Apple logo appear.
With this we will make contact with the service provider and reset network services.
I hope anyone reading this gets over the shock as happened to me;-)