"carrier settings update"....getting a pop up asking me to update, is this real?

[Diane2015]

  I keep getting a pop up telling me to Update my Carrier settings....always makes me nervous when I see pop ups like this. Is it a real update? What will it do? What will it change?

[Weth]

It's real

[Diane2015]

what does it do though??

[Weth · Accepted solution]

As Snn5 has been posting about 100 times today

• Carrier settings updates are small files that are installed on iOS devices. The Carrier settings include updates to Access Point Names (APNs), MMS Settings, features such as tethering and default apps such as Stocks, Maps, and Weather. Having the most up to date Carrier Settings is recommended for the proper functionality of the device.

[Diane2015]

Thank you