CMDA ONLY Won't Stay ON

**dakkiy** · 06-02-2012, 09:35 AM

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** · 06-02-2012, 09:54 AM

Originally Posted by dakkiy

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** · 06-02-2012, 10:16 AM

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** · 06-02-2012, 10:53 AM

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

**dakkiy** · 06-02-2012, 11:29 AM

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** · 06-02-2012, 11:36 AM

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

**Mercury81** · 06-02-2012, 11:41 AM

Changed mine two days ago, it's still on cdma only.

sent from my Evo4LTE

**kaablewy** · 06-02-2012, 11:59 AM

Mines has also stayed on cdma. Changed it the first day I got it.

**ItsMeCD** · 06-02-2012, 12:20 PM

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** · 06-02-2012, 01:05 PM

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** · 06-02-2012, 01:10 PM

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** · 06-02-2012, 01:30 PM

Originally Posted by dakkiy

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.

**NastyNeil** · 06-02-2012, 01:32 PM

Where do I go to check what mine is set as?

**NastyNeil** · 06-02-2012, 01:41 PM

Just checked it as well. When you do a PRL update it switches it back.

**hypercubexl** · 06-02-2012, 02:09 PM

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?

**evo4gMN** · 06-02-2012, 02:17 PM

It actually switches back when you do a profile update, not PRL. At least that is what mine does. Ugh!

**NastyNeil** · 06-02-2012, 02:25 PM

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.