While I'd be perfectly content with an IP67 iPhone with interchangeable battery, the current iPhones are IP68 which is a significant step up in dust/water ingress protection. IP68 devices generally require a sealant, IP67 normally doesn't, making it easier to do a battery hatch etc.

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cybrox 7 hours ago | parent [-]

IP68 doesn't require a sealant if you just use enough pressure. Phones are just too thin to screw on the back plate and use a proper gasket. Which is stupid in the first place because most people then go and put a bulky cover on them.

	▲	dathinab 6 hours ago \| parent \| next [-]
		and applying a sealant isn't per-see the problem either iff - it's generally commercially available - and re-applicable after replacement with just generic tools - and removing the battery doesn't risk breaking your phone due to physical strong binding glue being used as sealant etc. As a dump example you can design the phone as a sealed unit with the battery department being "outside" the seal. Then have the battery also sealed and apply a bit of "sealant" (wax?, glue?) on the electrical contacts braking the seal on both sides. As the battery and battery compartment back have to only be waterproof and not "rigid" this probably fits "just fine" into most phones (except the most over the top slim ones). Which is probably more the actual problem. Thinks like phone makers over-obsessing with making phones slimmer on a sub 1mm standard ... and then people anyway putting "thick" cases on the phone to protect it...
	▲	7 hours ago \| parent \| prev [-]
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