'I think removable batteries are a thing of the past. Probably better to invest in an external "power bank" if you find the power running low'
I want both though. I use a solar powered battery to charge my phones, and I want to be able to remove the phones battery when things inevitably go wrong. Though I'll admit that part of the reason for that is my last smartphone's proximity sensor died, it would keep the screen blank during phone calls, so the only way to hang up was to pull the battery.