Samsung secret codes not working

[memris]

*#*#4636#*#* not working on f34 is there any alternative?? Want to change network mode to lte only or 5g only 

[ѵօϲɑӀ4ӀօϲɑӀ]

Goto Settings> Security and Privacy> Disable Auto Blocker. And it will be solved. If this solved your query please accept my comment as solution by touching 3 dots near it.

[Ravi0883]

Turn off auto blocker

[VedantKalore]

Turn off auto blocker

[memris]

Auto blocker is off but still not working

[ѵօϲɑӀ4ӀօϲɑӀ]

Can you check other codes like *#0*#, *#06#, are these working or not.

[IAmSurya]

Use Google dialer for temporary. It's working & I'm using this method.

[memris]

It's working but needs an app to install

[IAmSurya]

Yes.

[sudipgh]

My 1st sim 5g connection not available