I don’t know if our TV remotes have that feature.
I poked around until I found a Wikipedia page that said I could find my phone using iCloud at iCloud.com. I was able to log in there (unlike last week when it said I had the wrong password) and found my phone.
ETA: In order to sign into iCloud on my Mac, I had to receive a verification code that was sent to my phone. Will I need a verification code every time? If I’ve lost my phone, I wouldn’t be able to receive it. 
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No, it’s supposed to be when it detects a new device. It’s clunky though, sometimes I log in on the same computer that I’ve been using for ages, and it sends me a verification code to that same computer, authorizing me to sign in on that computer. Go figure.
I’m not sure what would happen if you were unlucky enough to lose access to all previously used devices, but I suspect Apple could assist you with that.
One of the cool things about iOS - MacOS integration is that you can run Messages/iMessage on both. You can set up Message Forwarding so that Text Messages to your phone get routed to all of your devices.
I use 2-factor logins on a lot of sites. When on my MacBook, it is handy to have the code arrive on that machine rather than pulling out my phone.
It says my password on my MacBook needs to be updated. I enter the password again, and it won’t log me in.
I also can’t log into iCloud on my MacBook. So I’ll ask about iCloud and iMessage when I take the computer and the phone to the Apple dealer.
I think this has been covered but you are using the same AppleID on both devices. Right?
It’s my email address. I just opened Keychain Access, and that’s what it says. When I try to see the password using my computer password it says, ‘Access to this item is restricted. The provided password has been limited to a particular user account.’ Hence, my planned trip to the Apple dealer.
I have a 2005 Prius that is equipped with Bluetooth. I’ve just paired the phone to the car.
I was unsuccessful uploading my phone book from any of me three previous mobile phones. I guess I should make the attempt with the iPhone 6S. When I try to transfer using the car’s MFD it says ‘Transfer phonebook from phone.’ Is it possible to do that with the iPhone?
I can’t comment on a 2005 Prius with an older iPhone, but I can tell you that the current Toyota software with the latest iPhone and iOS is unbelievably crap. Whenever my iPhone first pairs with the car by bluetooth, and whenever you hang up a phone call in the car, it autoplays whatever music it can find on the phone and there is no way to stop this behavior. The most annoying thing is that it kicks in about 30s after I start my car, and if I have just started backing out of a parking spot, it’s starts blaring music when my screen has switched to the rearview camera so I can’t turn it off without putting the car in park again. There are pages and pages of online complaints about this, and no proper way to fix it. Some people put a silent track at the alphabetical front of their music library as a (preposterous) workaround! I blame both Apple and Toyota for the fact that there is no setting anywhere to turn off bluetooth autoplay. They both blame each other.
My 2018 Prius does not autoplay music using an Android phone. Sounds like it must be an iPhone issue.
Yes, it’s specific to iPhone. I’m not sure if it’s just with Toyota.
I will chime in to say 19% battery usage in 12 hours is pretty dang good for a smartphone. You can probably get it less by turning off features, but if your phone will go two more than two days without charging, I would declare victory and don’t worry about it.