If I have Wi-Fi available, it almost always means I'm home and I don't care how much power it's using. If I'm not home, I'm not on Wi-Fi and I want to conserve

If I have Wi-Fi available, it almost always means I'm home and I don't care how much power it's using. If I'm not home, I'm not on Wi-Fi and I want to conserve battery power. So there's no need to ever have Wi-Fi activated on my phone, unless I'm doing a software update. I'm sure there have been efficiency improvements over the years, but it's still needless power consumption. Also Wi-Fi calling appears to be off by default. Thanks for bringing it up, though. I might try it next time I'm in another country; if you switch SIMs on an iPhone, it loses all association between people's phone numbers and their entries in your contacts. Yes... the iPhone can't handle travel, 16 years in. ¯\_(ツ)_/¯ "You're posting too fast. Please slow down. Thanks." Then why was the Reply button enabled, and why does this rudeness persist year after year?