Can't register phone number with WhatsApp

Thanks for your quick reply!

In the Messages settings, MMS Messaging was On but Send as SMS was Off, so I turned it On and tried to register the phone again. I still don't receive the code from WhatsApp.

In the WhatsApp settings, both Background App Refresh and Cellular Data are On. All of the Notifications settings are also On.

I also send this info to the WhatsApp "Contact us" page. I received an email reply with a link that opens their web page with the registration instructions that aren't working for me.

Thanks for your suggestions.

I got it to work. I went to a restaurant and tried the same steps I used at home. The phone wasn't connected to the WiFi in the restaurant like it is at home. When I requested the code, it showed up as a notification at the top of the screen within a couple of minutes. I entered the code and was able to register the phone.

So, I assume having my iPhone connected to my WiFi somehow interfered with WhatsApp's message that they tried to send to me. If that's true, then after installing WhatsApp, the user should turn off the phone's WiFi connection before trying to register the phone. That doesn't make sense, but it's the only answer I can think of.

BTW, my carrier doesn't have any special settings for receiving international SMS.

Thanks for your suggestions.

One more thing - turn the phone's WiFi connection on after the phone is registered.