my wifi blue tooth and hot spot will not activate on my galaxy s4

[AC Question]

I'll go to turn my wifi switch on, it will move to the on position, but nothing happens. Then shortly after I've switched to on, I'll get an error message on the wifi toggle screen. The message just says error. The same outcome as well when I try to turn blue tooth, or my hot spot on. Every now and then I'll look at my phone and they all will be on then stop functioning again.

 

[belodion]

Try a Cache Partition wipe, and get back to us if no go.

https://forums.androidcentral.com/showthread.php?t=409154

 

[B. Diddy]

Welcome to Android Central! Also, see if it happens in Safe Mode as well: https://support.t-mobile.com/docs/DOC-27781

 

[sarahgad]

Hey, this is what you can do.
A Factory Reset is supposed to fix this issue . Assuming that there is no on-going hardware errors, you can try to isolate the problem by going to Safe Mode and testing the Wi-Fi connection again. To bring your phone to Safe Mode:

Switch Off your Samsung Galaxy S4 completely
Power it ON Again
While booting continuously keep pressing the left button beside the home button.
Continue to press it still the boot is completed and you can see the home screen
Once you’re in Safe Mode, pull down the notification bar and try to turn on Wi-Fi (it should). After the Wi-Fi is activated, press and hold the power button on the right side your phone then select “Restart”. After the phone reboots, the Wi-Fi feature should be working normally.

If this doesn’t help, try removing the battery while the phone is still on, then power on the phone again.
If not through again, try taking it to a technician there can be problems with the hardware.