For me it’s the notification light you used to find on older phones, was particularly good to know if your phone was charged without picking it up
1) Be nice and; have fun
Doxxing, trolling, sealioning, racism, and toxicity are not welcomed in AskLemmy. Remember what your mother said: if you can't say something nice, don't say anything at all. In addition, the site-wide Lemmy.world terms of service also apply here. Please familiarize yourself with them
2) All posts must end with a '?'
This is sort of like Jeopardy. Please phrase all post titles in the form of a proper question ending with ?
3) No spam
Please do not flood the community with nonsense. Actual suspected spammers will be banned on site. No astroturfing.
4) NSFW is okay, within reason
Just remember to tag posts with either a content warning or a [NSFW] tag. Overtly sexual posts are not allowed, please direct them to either !asklemmyafterdark@lemmy.world or !asklemmynsfw@lemmynsfw.com.
NSFW comments should be restricted to posts tagged [NSFW].
5) This is not a support community.
It is not a place for 'how do I?', type questions.
If you have any questions regarding the site itself or would like to report a community, please direct them to Lemmy.world Support or email info@lemmy.world. For other questions check our partnered communities list, or use the search function.
6) No US Politics.
Please don't post about current US Politics. If you need to do this, try !politicaldiscussion@lemmy.world or !askusa@discuss.online
Reminder: The terms of service apply here too.
Logo design credit goes to: tubbadu
Pretty sure phone cases with external batteries exist that are literally identical to what you are describing (“purchase physically larger or higher capacity batteries”). Also current phones do a lot more than the old phones you’re describing as “having insane battery life.” Sure, a cell phone of 2005 could be left on for probably two days straight without needing a charge but you were only getting an occasional text message and maybe calling someone once or twice and maybe playing Snake during that timeframe.
External batteries are not the same as there is substantial loss in transmitting the power to the phone, particularly with the many "magsafe" compatible wireless ones. The wired ones add substantially more bulk for similar battery size and although the standard for battery life is much better now, for many otherwise great phones it's still not amazing (aka every pixel prior to this year's).
Being able to quickly swap a battery or simply replace it with a 10000mAh cell for only a few mm more thickness (my preferred method) simply isn't an option now.