I have the same issue :(

Can you explain more details how do you upload the .CSV file? Using API or from a tool? You should also try the number in E.164 number format, which mean +12223334444.

I followed the instructions to use the RingCentral tool described in this help article: https://support.ringcentral.com/article-v2/Managing-the-shared-directory-of-external-contacts-in-the-RingCentral-Admin-Portal.html?brand=RingCentral&product=RingEX&language=en_US

I have ust upload the CSV and i dited in plain text editor (like notepad)
You have to add a comma for each field you do not wand to add data. In my case I only add First Name, Last Name, Job title, Mobile number and company:

First Name,Last Name,Job Title,Company,Email,Home Number,Business Number,Mobile Number,Company Main Number,Source,External ID
Pedro,Gomez,Field Tech,V&S Corporations,,,,+13123766435,,,
Jose,Lopez,Field Tech,V&S Corporations,,,,+12131237445,,,
Hector,Hernandez,Field Tech,V&S Corporations,,,,+15612315263,,,

The only thing i cannot figureit out its how to send text messages, it only allow me to send fax and call to this contacts …this is how i get here. :(

First Name,Last Name,Job Title,Company,Email,Home Number,Business Number,Mobile Number,Company Main Number,Source,External ID
Pedro,Gomez,Field Tech,V&S Corporations,,,,+13123766435,,,
Jose,Lopez,Field Tech,V&S Corporations,,,,+12131237445,,,
Hector,Hernandez,Field Tech,V&S Corporations,,,,+15612315263,,,

If you talk about the RC app when you select the Contacts view and the Personal tab and you don’t see the option icon to send text messages to a contact. Then double check if you can see the “Text” icon at all at the first pane of the RC app

If you see that, you should see this when selecting a personal contact too

If you don’t see those text icons, it’s because the user does not have a the permission to send text message and in that case, login your account admin portal to check the user role and make sure that it has the “Business SMS” permission checked