Manually Switching out of 4G

[The_prof]

I just switched from a Moto Droid RAZR Maxx to the Galaxy S4.  I had an app that brought me to a phone setting that allowed me to select CDMA vs. LTE frin a drop down list so I could force the phone into a slower speed network to save battery life.  That App ( LTE Setting) does not work on the Samsung S4.  That app brought me to s android screen that started with the IMEI number, Phone Number, and a long list of other settings.  The one called Set preferred network type has a pull down list of about 15 different settings.  How do I get to this on the Galaxy S4?

[Ann154]

It might not be possible with the Galaxy S4 especially if the manufacturer didn't include the code to allow you to access that area of the phone settings.

I didn't have an issue with battery life on the S4 I have used.

[The_prof]

I seem to be using up battery power too quickly, moderate use seems to drain the battery in 4-5 hours with few phone calls.  I shut the screen off after use and use wifi when available.  I also shut off wifi when not available. 

[Ann154]

The_prof wrote:

I seem to be using up battery power too quickly, moderate use seems to drain the battery in 4-5 hours with few phone calls.  I shut the screen off after use and use wifi when available.  I also shut off wifi when not available. 

So what does the battery usage graphic tell what is using the battery?

[The_prof · Accepted solution]

90% is screen, nothing else significant.  Yesterday at the movies my phone in the holster got very hot and went from 90% battery to 50 % in 90 minutes.  I wonder if the holster caused the screen to stay on with the power switch facing down?  I'll have to make sure it always faces up.  I found a thread about apps that allow you to shut off LTD and use CDMA but no of them work.  I'll keep searching.