Help RF Lock settings, IMS registration settings Inquiry

[Phalon4]

1.Should the RF Lock settings be set to (Auto) or (High) or (Low) in Android phones?
2. Should the IMS registration be set to( On) or (Off) in your Android device.
Dail pad *#*#4636#*#* Phone Information settings?

 

[Jfalls63]

It's usually best to leave settings in the device hidden menu as is. If you decide to change anything, be sure to write down the default setting and how to navigate to where it is so you can change it back if necessary.

 

[Phalon4]

It's usually best to leave settings in the device hidden menu as is. If you decide to change anything, be sure to write down the default setting and how to navigate to where it is so you can change it back if necessary.

Thanks, So what exactly does the RF settings do within the device? I'm only asking to learn about things I don't know in hidden settings on a device?

 

[Jfalls63]

Not sure. I've fooled around in the hidden menu on Samsung devices a few times. Looking at how to select particular frequency bands and force 2g&3g only.
Probably could do a Google search and see what pops up.