[BLISS ROMS Development] RanceJustice:
Hey guys, I think I'm having some connectivity issues as well. I'm using the April 29th build of BlissPop with BanksGapps (and manually installed some Google apps to test, such as the Messenger client etc..). T-Mobile (USA) is my provider, and I am typically using WiFi when I'm at home for my data connection which seems to be fine when it comes to downloading, updating apps etc. Here are the issues I've had thus far...

1. Perhaps most importantly it seems like some of my SMS messages are either not being delivered at all, or appear to the recipient considerably after I sent them. All of these appear to send just fine on my side. Using the very same app and to the very same number, it seems certain messages are delivered immediately as is proper, while randomly others are not, so I never know if the person hasn't seen my message yet and replied, or if they never got it at all. In case it matters, the recipient is on Sprint - I don't SMS frequently enough with many other users to see if the issue happens with others as well. Also, there is the possibility that some incoming calls may be not registering as incoming at all or showing up as missed, but I can't confirm this. Is it possible that having WiFi turned on could cause one or more of the above issues for some reason? I've not yet attempted to turn it off, but I shall do so just to test...

2. I've been unable to discern if VoLTE and/or the HD Voice codec is in use during voice calls. When I have WiFi enabled, the cellular signal strength is visible, but there is no specific listing of data channel at work such at LTE, H+, H+, 3G etc.. I know my home area has LTE, as when I turn off WiFi, it swaps immediately showing LTE icon as visible.. My Settings have Preferred Network type = LTE, and "Enhanced LTE" = On. I was informed in the past that I should see a "HD" icon during calls where a HD Voice codec is being used, but I've not seen it yet to date.. Likewise, I am unsure if my calls are being routed VoLTE (is there something I should see during the call to confirm this, independent of the HD Voice codec setting?). Normally, I have WiFi on, and I am making calls to a Sprint subscriber using a Galaxy S6. Now, since (frustratingly) T-Mobile hasn't gotten their **** together and activated WiFi Calling on Nexus 6, I assume that making a voice call will be sending it over the cellular channel which should in theory, be LTE (as there is a LTE signal present that I can see when I turn off WiFi). Given that both the Nexus 6 and Galaxy S6 support the HD Voice codec and my Nexus 6 should be using VoLTE for its part of the call, it seems to me that HD Voice should be active? However, I see nothing to indicate the call is any different than "normal".

There are too many possible variables that could be causing these problems (ie carrier, Android itself, custom ROM CM base, ROM itself etc..), but I seem to remember that CyanogenMod based ROMs, for a time, had issues with certain call and messaging elements (like VoLTE on certain carriers etc..) so I am wondering if anyone else has run into similar problems. Better yet, if anyone else using BlissPop on T-Mobile could confirm that all these features are working flawlessly etc.. that would be helpful, especially if you could point me towards some sort of tests/diagnostics to see what could be going wrong. I'm also considering using the updater and TWRP to "dirty flash" up to the most recent version of BlissPop and see if that helps anything. Any ideas? Thanks