Windows 10: should I be concerned about "Don't recognize this activity?"

I just got a message from L: no-reply@accounts.google.com that concerns me. It occurred about 90 seconds after an Apple update to my iPhone. See the image. It shows "Windows" as current user. I don't recognize the IP address but it may be the address of the Verizon tower?

Of course I know the stock answer is to change all of my passwords but that's a real pain.

Should I be concerned?

:)

 

Should I be concerned about the warning about a full charged phone being happy?

Hi,
Doctor-Who. Thank you for posting on the community. There is nothing to worry. As long as you are using the original charger and cable with the phone, everything should be good. However, we cannot guarantee that the charger will perfectly with your phone
since you are using a third party accessory. Let us know if you have other questions.

 

Should I be concerned about the warning about a full charged phone being happy?

I recently purchased a new Lumia 640. In fact several for members of my family. We have several charging stations around the house. For example, one of these is one of those multiple device charging stations you can get at Best Buy. Today I plugged in my
phone to get it charging. I saw it pop up this message that said something about a fully charged phone is a happy phone, be sure the cable that came with the phone, etc. (I don't remember the exact wording, but that's the jest of it.) Now as it turns out my
phone is the only device currently plugged into that charging station, so I don't know what it's complaining about. I've left it plugged in to charge.

But I'd like to know, is there anything I should be concerned about plugging in one of those 640's into that charging station?

 

Did you sign in at that time? If not, be concerned. Similarly if the location does not relate to you.

 

They don't always get the location right, specially on a desktop. I would change your password anyway. Use a password generator and generate a random password.

 

Location is usually your ISP's with ethernet; much more accurate with Wifi.