[Q] Do I need to root my Galaxy S4 to get access to or see WiFi networks? - Galaxy S 4 Q&A, Help & Troubleshooting

Hi all.
My new Samsung Galaxy S4 doesn't see any WiFi network around it. Not an Encore AP, not a WiFi made with Connectify.me on my laptop, not APs created with other smartphones with Android. Those WiFis are seen by other (rooted) smartphones by Samsung and by my laptop itself.
If I bring up an AP/Hotspot with my Samgung Galaxy S4 other smartphones, even my laptop, can see it an can get connected to it, but my GS4 doesn't see any WiFi network.
Any idea why it is happening?
Samsung Galaxy S4 I9505
Android version: 4.4.2
Baseband: I9505XXUGNG2
Build number: KOT49H.I9505XXUGNG2

Maybe a hardware problem? Try for a techeniction
Sent from my GT-i9505(rooted) Android 4.4.2

Did you recently upgrade your ROM?

Sorry to ask, just making sure, your WiFi is turned on, right?

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