@dazinism Hm not exactly what I'm looking for. AFAIK flashing a custom rom still will void warranty on a lot of devices.
My research so far is disappointing: Either upload all your stuff to Google, or be able to root/install a custom rom.
@stochastix @dazinism Haha yes, new problems! I used to run Replicant for years on a Galaxy S2, but as it broke down while I was travelling and it's really hard to buy supported phones "on the road", I went with a stock rom ever since... for myself I've bought a Purism Librem 5 and will just wait for that.
The question here was really more about advice to give for average Android users, as a lot of my friends are not willing to spend multiple hours just for setting up a backup solution.
@dkellner as I understand it they say it will void your warranty, but it doesn't. People who are prepared to insist its still covered get a new phone.
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