[Q] Losing 4g on boot

[johnwaynegacy]

Here is my story.

Last night I decided to jump from cm10.1.3. to the latest AOKP nightly. Something went wrong with the flash, probably a download corruption due to the fact that I downloaded over lte. In the install I also overwrote my recovery image with the dual boot devil kernel one. On boot I had problems and couldn't restore my backup. I assembled a flashable package CWM 6.0.4.1 IIRC. I was able to restore and was back in business.

I downloaded aokp on my pc instead of my phone, flashed that, and it was working fine for a couple hours. At some point I saw 2 bars of 3g. I was like wtf, whatever and connected to wifi. I am on an unlimited plan, so this was an inconvenience. I flashed back to cm to get some files I wanted, and went to sleep. still having 3g.

Woke up, 3g. The network must be broken, right?
I meet up with my sister, she has 4g lte full service.
I reboot, see full service, see the 4g icon, then see the 4g icon go away, service drop to 2 bars and the 3g icon come up.

I reflash my radio, 3g
I wipe /system/,/data/,/cache/, restore, 3g
reslash kernel, 3g

Why is my phone dumping lte in favor of 3g. Did I piss off verizon?

EDIT: I just installed stock rooted and still have 3g only

 

[johnwaynegacy]

I just got 4g for a minute after cycling airplane mode. it switched to 3g during a speed test.

Edit, I seem to have resolved this by toggling my network mode. I find it odd that this would have an impact across backups.

Edit2 sometimes it doesnt stick on reboot. Also goes back to 3g after a call. This is very wacky.
Now 3g stayed connected in a call.

 

[johnwaynegacy]

What is the code to reprovision the sim card? Some people have seen results with this. however the code for the s3 that I found wont work.

 

[johnwaynegacy]

verizon is sending me a new sim. I am glad I flashed to stock because even over the phone they asked for my build number.

 

[kimdoocheol]

After setting up, did you by chance change any of the settings in PA to turn on 2g when the screen is off? I was doing this and it would change my network settings to GSM instead of LTE+Evo

 

[johnwaynegacy]

After setting up, did you by chance change any of the settings in PA to turn on 2g when the screen is off? I was doing this and it would change my network settings to GSM instead of LTE+Evo

nope, in fact I even restored with odin. On a dead stock unrooted rom with a locked bootloader. lte didn't work.

I doubt it is the sim though, because I popped it into my rezound with an adapter and had a really good connection. I suppose we shall see.

 

[johnwaynegacy]

These are my current available apns. When I try to create a new one it has a MNC value of 005. 4gtricks.com says it should be 012. If I change the MNC to 012 the system automatically deletes my new APN. Anyone have settings to offer me? Or maybe suggestions. /system/etc/apns-conf.XML is there and full of info.

Sent from my SCH-I605 using Tapatalk

 

[johnwaynegacy]

I just popped my sisters sim into my phone. I instantly had 4g. So yeah, that leaves my sim, or an account problem. But like I said my sim provided me with 4g when I tried it in my rezound.

Sent from my SCH-I605 using Tapatalk

 

[kimdoocheol]

These are my current available apns. When I try to create a new one it has a MNC value of 005. 4gtricks.com says it should be 012. If I change the MNC to 012 the system automatically deletes my new APN. Anyone have settings to offer me? Or maybe suggestions. /system/etc/apns-conf.XML is there and full of info.

Sent from my SCH-I605 using Tapatalk

should have been LTE+

 

[johnwaynegacy]

Solved. It was the SIM

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