CMDA ONLY Won't Stay ON

dakkiy

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May 28, 2012
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Everyday I have to go the Network Mode and change it from CMDA / LTE to CDMA Only. It keeps changing on it's own to CMDA / LTE and that sh*t is draining my battery.
 

crxssi

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Everyday I have to go the Network Mode and change it from CMDA / LTE to CDMA Only. It keeps changing on it's own to CMDA / LTE and that sh*t is draining my battery.

Strange, I turned mine off on day one, and it is still off five days later and across several charges and even reboots (fast and slow boot- was testing something else).
 

Dakota 35-2

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Interesting...Just checked mine and it had switched back too lol...Switched it back to CDMA Only...let's see how long it takes to switch back

-Sent from my US Customs Edition EVO 4G LTE-
 

Krasin

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Same here... It explains why my battery took a nosedive the past few days. I wonder why it changes back.
 

dakkiy

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I spoke with Sprint via Chat...
"Pam G.: The device changes its settings according to the coverage and device compatibility"

I called Sprint Technical Support: The representative recommends to get it diagnosed by a Sprint Repair Center because it's not suppose to do that on it's own.
 

jackjack1969

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Wow. After reading this I checked mine and sure enough, it had changed back to Lte/cdma. I wonder if it happens when I let the battery go dead?

Sent from my EVO using Android Central Forums
 

ItsMeCD

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Mine is still set to CDMA only as well.

Commonalities?

In use less than 24 hours
Charged overnight
Battery pop up at 5% yesterday so it hasn't been "drained" completely

Anyone else?
 

Dakota 35-2

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I'm wondering if when you update a prl or profile it switches back? After I got off the phone with tech today it was back to cdma and LTE...

-Sent from my US Customs Edition EVO 4G LTE-
 

dakkiy

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When I do a Profile or PRL update switches the CDMA only to CDMA / LTE.
I finished speaking with Customer Service again, and he stated its a known issue and working closely with HTC to the fix the issue.
 

crxssi

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When I do a Profile or PRL update switches the CDMA only to CDMA / LTE.
I finished speaking with Customer Service again, and he stated its a known issue and working closely with HTC to the fix the issue.

When I performed a PRL update, it did not switch to CDMA/LTE. I have never tried a Profile update, however.
 

hypercubexl

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Has anyone done a quantitative test of battery life with and without it on? I didn't notice it had also switched back on me, I still got 35 hours out of a charge with an average mix of standby/usage.

Is it really an extra drain when there is no LTE to use, or is that a perception from how badly 4G and 4G "hunting" effected the OG EVO?
 

NastyNeil

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After rechecking this, you are correct. It is a profile update. I usually do one after I do a PRL. I just did a profile update only and it made it switch.
 

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