I tried t mobile for two day after having sprint first, i decided to go back to sprint and now i can't make outgoing calls. i can get calls, texts, use the my data/internet but when i try to make a outgoing call it just stays dialing , the person I'm calling phone will ring but when they pick up it's silence. My phone never has ringing at all just says dialing and when the call drops it jumps from lte back to 3g and says searching for service. After a minute or so lte pops back up but again i cannot use my phone for outgoing calls. I tried flashing back to 4.4.2 and manually upgrading back to 4.4.4 but to no avail. Does anyone know what's going on?