With it being a concern for my work I did a bit of digging and found the gov.uk press release which doesnt really have any extra detail.

The original source of the meme, cause not enough people know about her work:

http://hyperboleandahalf.blogspot.com/

My S10e battery started to bloat so ive swapped to the zenphone 9 in the last week and a half, as long as you dont need wireless charging and get over the initial bumps moving away from samsung's android tweaks its a great phone.