However if i use data while on HSPA+ mode it seems it wont handoff to LTE seamlessly
Like if you're on Verizon using 3g streaming consistently (not pandora something consistent downloading/upload like tunein radio) it would secretly bump you back to 4G LTE without any problems and stream would continue without even you noticing
T-Mobile however on the other hand doesn't until you stop the data usage and then it bumps back up to LTE
test it out download Tunein radio and stream a station make sure you're on HSPA+/HSPA then while streaming go to a location with like full or best LTE signal. (I went to the mall and drove right under the tower and phone still insists HSPA+)
not sure whats going on here? the Network not telling the phone to handoff? or some internal network issue or an issue with my nexus 5
by the way i am stock android 4.4.2 no root or recovery or whatever
So my question is is there a way to fix this? or is this something i need to email John Legere about?