SMS sender ID does not identify inbound SMS numbers with (9)

I live in Argentina. Whenever I receive a phone call from *+54 11 xxxx-xxxx* and I have that number associated with *Roger* in my contacts, *Roger* is identified. But if I don't pick up for whatever reason, I get an SMS reporting the missed call. The number which originates the SMS is reported as *+54 9 11 xxxx-xxxx*, and *Roger* is not identified. If I add *+54 9 11 xxxx-xxxx* as a number for *Roger*, the SMS ID is correctly updated, which confirms the SMS app has access to my contacts. I shouldn't need replicating the number for all my contacts. Currently using Android 11, Samsung S10e.
This was working fine in my previous Android 8, Samsung J7 prime, prior to my *Smart Switch*.
See details below. **How can I fix this?** After trying this I realized the problem was the extra *9*. I didn't try syncing numbers stored in the phone with my Google account as here (and I am not sure my problem is the same as that other). SMS ID should not rely on Google, and I didn't need that with Android 8. I guess the OS (or the app?) should take care of that. (related ) ## More details ### How this was working before the phone switch I was using a Samsung J7 prime with Android 8, with the same sim card and mobile provider as I use now. I am right now checking in my old phone a message that I received, with number *+54 9 11 xxxx-xxxx*, and SMS ID is correct. The same message, in my new phone (transferred via Smart Switch) is not SMS-IDentified. ### How are phone numbers built Phone numbers are built as *+(Country) (Area) (Number)* as usual, with a possible extra *9* after the country code, or a possible extra *15* after the area code. The historical reasons for those extra numbers, and when were they mandatory (calling from abroad/within Argentina, phone call/SMS, calling from mobile/landline, calling to mobile/landline, etc.) are a separate issue. These rules kept confusing people, in particular foreigners. Nowadays **networks are smart enough**, the rules are *mostly* (I wouldn't dare saying 100%) not needed. You could also use *+(Country) (Area) (No.)* from within Argentina; before, that was not allowed, *0(Area) (No.)* was needed from within Argentina. I am not certain, but I think even *(Area) (No.)* works. This is similar to what happens in other countries. Related: https://en.wikipedia.org/wiki/Telephone_numbers_in_Argentina#Inbound_SMS So if I call using *+54 9 11 xxxx-xxxx*, it will likely work well, the same as if I use *+54 11 xxxx-xxxx* or *011 xxxx-xxxx*. 54: Argentina
9: Prefix for mobile numbers
11: Buenos Aires
xxxx-xxxx: phone number Then there is the issue of Caller / SMS ID for inbound calls and messages.