‘No mobile coverage’ battery drain
Hi all, I’ve recently upgrade to a 12 mini and have been suffering poor battery life. The area I live in has next to no signal so I use Wi-Fi calling, however, my phone still constantly searches and drains the battery unless I put it into flight mode which is annoying because I keep forgetting to turn it off when I leave home. Is there anything I can do so I don’t have to keep putting my device in flight mode? Thanks
iPhone 12 mini