I can confirm that you no longer need to use the much outdated CM11 T-Mobile ROM, T-Mobile Stock ROM or the RayGlobe Flex ROM in order to use a USA domestic sim such as T-Mobile. I noticed that the BUILD.PROP on the T-Mobile CM11 ROM has some enabled goodies which do not come on the default CM11 for the LS980. That made me wonder what if I use a unified ROM (built for all variants) instead of the ROMs available on the Sprint G2 section? The build.prop there will still include capabilities for GSM devices, which CyanogenMod seems to strip in order to avoid switching to GSM (correct me if I am wrong). Anyways I gave it a go using the LS980 Bliss Pop ROM based on 5.1, which is found in the non-carrier specific section of the G2 Android Development, and sure enough I was back to being a Sprint device. Using the dialer, I accessed the Testing menu by dialing *#*#4636#*#*, switched to WCDMA preferred, and it seemed to have revert. Then I clicked WCDMA only and it stuck and I could see my signal bars changing. THEN I switched it to GSM/LTE and FINALLY HSPA+ appeared. Calls, texts, data, it all works as the APNs were already auto selected. MMS DOES NOT WORK. I've been using it like this for the past couple of hours and no issued so far. I cannot remember if I did the official unlock available on our section of XDA as I've had quite a few of the Sprint version on and off, but I really do not see what role that plays in the matter. If it doesn't work for you, then you probably do need to use the official unlock.
***Again, if my theory is correct, this should work only on unified ROMs, which are ROMs compiled for all/multiple variants.
It never worked for me on stock CyanogenMod ROMs for the LS980, thus my theory. Another theory I have is that since Sprint now allows domestic unlocks, these phones may be free to enter the domestic side if you can get them to recognize a domestic sim...
If you want pictures/proof, ask, its about 5am in my time zone and I'm too lazy to take them and upload them.
If you want to force HSPA+ instead of HSPA, use the "HSPA+ Tweaker" app found in the Play Store.
If you feel like this is good news since you use this device on a carrier other than Sprint, remember to thank me.
If you are in another country and are willing to experiment, try it and I'll update my OP as soon as I can.
If you have already mentioned this in another thread, this is my own thread, started so that others can see it easier rather than having to accidentally stumble across yours in another thread.
EDIT: Can confirm it works on other AOSP ROMs. When switching network modes, you must have a stable data connection or else it will automatically try to connect to Sprint towers.
MMS DOES NOT WORK!
***Again, if my theory is correct, this should work only on unified ROMs, which are ROMs compiled for all/multiple variants.
It never worked for me on stock CyanogenMod ROMs for the LS980, thus my theory. Another theory I have is that since Sprint now allows domestic unlocks, these phones may be free to enter the domestic side if you can get them to recognize a domestic sim...
If you want pictures/proof, ask, its about 5am in my time zone and I'm too lazy to take them and upload them.
If you want to force HSPA+ instead of HSPA, use the "HSPA+ Tweaker" app found in the Play Store.
If you feel like this is good news since you use this device on a carrier other than Sprint, remember to thank me.
If you are in another country and are willing to experiment, try it and I'll update my OP as soon as I can.
If you have already mentioned this in another thread, this is my own thread, started so that others can see it easier rather than having to accidentally stumble across yours in another thread.
EDIT: Can confirm it works on other AOSP ROMs. When switching network modes, you must have a stable data connection or else it will automatically try to connect to Sprint towers.
MMS DOES NOT WORK!
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