I've been using my Samsung J7 Perx (rooted) for years now, I like this phone, the battery last forever but apparently Sprints LTE network is not compatible with the standard LTE network and i'll lose service in a couple weeks. So I'm on a hunt for a new phone. I would like to find a carrier unlocked phone with a removable battery and has an unlocked bootloader or is easy to root. One thing I've learned about this phone is being able to stop it from updated and disabling programs from running in the background makes a big difference on battery life.