This is precisely why I "upgraded" my S2 to an S5, even though the S6 was already out and the S7 was already on the horizon. I'm running LinageOS on it and it

This is precisely why I "upgraded" my S2 to an S5, even though the S6 was already out and the S7 was already on the horizon. I'm running LinageOS on it and it works flawlessly still, even though I'm now on my third battery. I will never buy a >$500 device (be it smartphone or laptop) with a non-removable battery or easy path to replace it. There's really no reason to buy any of the most "modern" phones unless you fancy getting ripped off big time.