How to make a call in Germany

If you're using your mobile, the easiest is just to dial it like you would if you were calling an international number from the US - take out brackets and hyphens, and the leading zero - so +49 8165 99900.

Plus is what you use on a mobile to dial an international number, because different countries use different codes to access international dialing (which in Germany is 00).

The hotel should list their number as +49 8165 - 999 00
Area codes are thing of the past, and I nowadays store all my phone numbers, even local ones, in international form in my phone.
So +xx-xxx-xxx-xx-xx
That way the number always works, regardless where I am.

Check to see if your phone has a setting to automatically format international numbers. On my Android Pixel phone it is called "assisted dialing." To make the plus sign on my phone I do a long press on the zero key.

I have an Iphone 16 Pro. No idea of assisted dialing

Rick has a whole page in his guides about how to make phone calls. Because it's actually fairly complicated.

It is called "dial assist" on iPhone:
https://support.apple.com/en-qa/guide/iphone/iph6e5e72b79/ios

And here is the guide referred to in last post: https://www.ricksteves.com/travel-tips/phones-tech/data-roaming

Just add the hotel to your contacts - add the country code, then the full number - then select the contact when you make the call - you don't need to tap numbers

M & S,

Google your hotel, tap the call icon and your phone will do the dialing for you.