If you’ve read enough reviews or buying guide about tech products, you may have seen critics refer to short code that starts with the letters “IP” – IP57, IPX5, IP65 – the letters stand for “Ingress ...

Not long ago, a single IP rating was the norm for smartphones. It meant your phone could take a splash, survive in a dusty environment, and maybe even handle a quick dip in the pool. But lately, phone ...