[Galaxy S 4 i9505 Original Android Development] roiikka:
The hottest rom. Thank you!

Ok, so I'm new to the forums, but not new to ROMs.

I'm posting a bug so let me know if I need to post some kind of log (just shoot me in the direction and tell me how and I'll do it).

First of all. THANK YOU for your hard work. This is a ROM I can be content with and I am very hard to please when it comes to ROMs.

Ok, so I just flat out updated to the latest version of this ROM from the second to last one (somewhere in November or December it was released. That one) and I noticed that when I have my WiFi on and it switches over to the data signal from WiFi it cuts off the data (exclamation point on the signal bar, no data speed readings on the speed indicators) and I have to switch it to 3G then back to 4G. Then it works. I already tried to switch from TMobile IPv6 to TMobile LTE and the other way around but it makes no difference. I have it on just TMobile LTE (the one in the APN profile list). It seems I have to do less to get it working that way when it cuts off.

Any recommendations ?

Note: Not to disrespect you guys original post and bug posting guidelines or anything but I DID install Xposed BUT it only modifies things not related to the APNs and such, like the time and date bar display settings and YouTube background playback .. which is why I'm posting this anyways.

Other than that, this ROM is HOTNESS and I am sticking with this one by far. No other problems I have seen. At all.

Oh, and I have a Galaxy S4 M919 with TMobile Android 5.1.1 JDC Team Optimized CyanogenMod ROM

EDIT:

ROM Version: OptimizedCM-12.1-20160118

Thanks in advance for any help .. :good:

Solution so far:

make sure the APN is on T-Mobile US LTE (for TMobile only)

1. in the default phone dialer I pressed *#*#4636#*#*

2. tapped on "phone information"

3. switched preferred network type to the option "TD-SCDMA, LTE, CDMA, EvDo GSM/WCDMA"

4. near the bottom of the same screen tapped "refresh"

5. tapped "update" (after the refresh code appeared)

6. reboot

7. in MOBILE DATA SETTINGS (not the secret menu. the actual settings page) under Data roaming I changed Preferred network type to "LTE (recommended)"

8. reboot

9. done

Rebooting one last time to confirm this has been fixed on the TMobile Galaxy s4 M919 CyanogenMod 12.1 JDC Team Optimized and in the release I mentioned in the problem above .. .. .. (waiting) .. and yes it does .

This problem was only with WiFi switching and after reboot. Hope this helps you guys! Take care.

Solution Error:

Over night the problem came back when I woke up which is making me believe it's a modem issue with the WiFi and data switching.

Extension:

I'm on the FOH3 modem (US TMobile LTE) and the latest 0118 release. The release I came from that it was working on was 1130 (2015) OPTIMIZED ..

Final Solution (until fixed):

I am using a macro (MacroDroid) to turn off and then back on airplane mode when I turn off WiFi and then again to refresh the data connection during the night. It probably only needs it done during the night and then it seems to be good for the rest of the day, until the next day. Toggling airplane mode seems to be the only (most easy, also) way to fix this without coding so I set it to do it automatically.

Edit:

I figured out exactly where the problem was. The "enable roaming" switch is backwards. I enabled it, but it basically disables it. 4 days of problem solving to find that when I was "enabling roaming" every time I re-set up the new ROMs it was being disabled. A simple thing to over-look as it doesn't disable it right away.

Problem solved.