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Sprint Tri-Band Galaxy S4 and CDMA
I have a Sprint Tri-Band Galaxy S4. For the past two weeks, I have had no signal in my house.
I talked Sprint into sending me a Airave 2.5+ at no cost. After I set it up, still no bars.
I tried my wife's flip phone and it got 5 bars.
When troubleshooting my Galaxy S4, I first checked "Network Mode" in Settings, it was on "Automatic".
I switched to "CMDA" and got 5 bars, but no LTE Data, only 3G.
When I tried "LTE/CMDA" I got LTE back (Not from the Airave), but no voice.
Which brings us to my question -- Why no CMDA voice in "Automatic" ??
Then just to test, I turned the Airave off, I now had 3 bars in my house from the Sprint tower.
Switching to "Automatic" left me with 0 bars again.
I would think with no signal in "Automatic" mode, it would then seek other bands and find the signal.
I can only guess that "Automatic" seeks the 1900 Mhz band, and Airave is on 800 Mhz.
I can't be absolutely sure because Sprint won't tell me.
If I'm right, why won't my Tri-Band Galaxy S4 find the signal on 800 Mhz??