No signal, showing "searching" since yesterday

[owang]

My iphone 4s showing " searching" since yesterday afternoon. Can't make phone call, can't use 3G. Now use wifi only. Does anybody know what is happening with fido. Living in Mississauga and Brampton area.

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[Roskov]

Did you try to reset network settings?

Settings->genera->reset->reset network settings

If that doesn't help try hard reset on the phone by pressing home button and power button both at the same time for like 10 seconds. Don't worry, none of these 2 delete any personal info from phone. Reset network settings only deletes passwords for wifi.

[owang]

Thanks, tried both and also "reset all". didnt work. Anything else I can try? 

[Interstellar · Accepted solution]

My wife had the same issue.  Brought the phone to Apple store and did a Sim card swap.  Problem solved.