Budget is $250-300. I currently use a just over 3 year old Honor 5X on Lineage and it's time has come. Needs: Unlocked GSM, good AT&T MVNO network compatibility. New. No used phones. Strong wants: SD card slot Much faster user experience. I want apps to open fast and be responsive even with lots of things open. Wants: Physically smaller phone. Honor 5x is 5.96 x 3.00 x 0.32 in and I feel it's too large. Nice to have but not a deal breaker: Headphone Jack Big battery Don't care: As long as the camera isn't total crap I don't care how good it is. Gaming - I never game on my phone so don't care about this.