I remember the OnePlus Two came out and was a disappointment due to no NFC and incomplete radio bands. So, i still use my OnePlus One as one of my phone lines. But it isn't my primary phone line. The battery is still pretty good on it though. My Nexus 5 has brilliant features and the standby radio has incredible power saving. But at the same time, the battery is slowly dying for 2 1/2 years.

I don't know. They should be putting better batteries in these phones if they won't let them be replaceable.