OnePlus 9 and 9 Pro

Data is taken from OnePlus 9 Pro firmware 11.2.5.5 Carrier Policy files. All OnePlus Unlocked models share same modem configurations but hardware supported combinations are different.

Check in cacombos.com site supported combinations:

9 Pro:

Asia

China

Provider 5G NSA Bands 5G SA Bands DSS enabled 5G Roaming Networks
China Mobile n41, n78, n79 n41, n78, n79 false China Mobile HK
China Telecom n1, n78 / n41, n78, n79* n1, n77* false  
China Unicom n41, n78 n1, n78 false  

Hong Kong

Provider 5G NSA Bands 5G SA Bands DSS enabled 5G Roaming Networks
3 n1, n3, n78, n79, n257   false  
China Mobile HK n77, n78   false  
HKT n1, n3, n78, n79, n257   false  

Singapore

Provider 5G NSA Bands 5G SA Bands DSS enabled 5G Roaming Networks
M1 n1   true  
Singtel n1, n3, n28, n78   true  
StarHub n1   true  

Thailand

Provider 5G NSA Bands 5G SA Bands DSS enabled 5G Roaming Networks
AIS n28, n41   true  
DTAC n28, n41   true  
My by Cat n28, n41   true  
True n1, n3, n28, n41, n78   true  

Europe

Austria

Provider 5G NSA Bands 5G SA Bands DSS enabled 5G Roaming Networks
A1 n1, n3, n28, n78   true  
Magenta n1, n3, n7, n28, n38, n78   true MCC: 232 204 262 216 260 231 219 202 230

Belgium

Provider 5G NSA Bands 5G SA Bands DSS enabled 5G Roaming Networks
Proximus n1, n3, n7, n28, n78   true  

Czech

Provider 5G NSA Bands 5G SA Bands DSS enabled 5G Roaming Networks
O2 n28, n78   true  
T-Mobile n1, n3, n7, n28, n38, n78   true MCC: 232 204 262 216 260 231 219 202 230
Vodafone n1, n3, n7, n28, n78   true  

Denmark

Provider 5G NSA Bands 5G SA Bands DSS enabled 5G Roaming Networks
3 n1, n3, n7, n28, n78   true  
TDC n28, n78   true  
Telenor n78   true  
Telia n1, n3, n7, n28, n78   true  

Estonia

Provider 5G NSA Bands 5G SA Bands DSS enabled 5G Roaming Networks
Elisa n38, n78   true  
Telia n1, n3, n7, n28, n78   true  

Finland

Provider 5G NSA Bands 5G SA Bands DSS enabled 5G Roaming Networks
DNA n1, n28, n78   true  
Elisa n78   false  
Telia n1, n3, n7, n28, n78   true Telia Norway

France

Provider 5G NSA Bands 5G SA Bands DSS enabled 5G Roaming Networks
Bouygues n1, n3, n28, n78   true  
Free n1, n3, n28, n78   true  
Orange n1, n3, n7, n20, n28, n78   true  

Germany

Provider 5G NSA Bands 5G SA Bands DSS enabled 5G Roaming Networks
Telekom n1, n3, n7, n28, n38, n78   true MCC: 232 204 262 216 260 231 219 202 230
Vodafone n1, n3, n7, n28, n78   true  

Hungary

Provider 5G NSA Bands 5G SA Bands DSS enabled 5G Roaming Networks
T-Mobile n1, n3, n7, n28, n38, n78   true MCC: 232 204 262 216 260 231 219 202 230
Vodafone n3, n28, n78   true  

Italy

Provider 5G NSA Bands 5G SA Bands DSS enabled 5G Roaming Networks
TIM n3, n78   true  
Vodafone n3, n78   true  
WinTre n1, n3, n7, n38, n77, n78   true  

Lithuania

Provider 5G NSA Bands 5G SA Bands DSS enabled 5G Roaming Networks
Telia n1, n3, n7, n28, n78   true  

Netherlands

Provider 5G NSA Bands 5G SA Bands DSS enabled 5G Roaming Networks
KPN n28   true  
Tele2 n1, n3, n7, n28, n38, n78   true  
T-Mobile n1, n3, n7, n28, n38, n78   true MCC: 232 204 262 216 260 231 219 202 230
Vodafone n1, n3, n7, n28, n78   true  

Norway

Provider 5G NSA Bands 5G SA Bands DSS enabled 5G Roaming Networks
ICE n1, n28, n78   true  
Telenor n28, n78   true  
Telia n1, n3, n7, n28, n78   true Telia Finland

Poland

Provider 5G NSA Bands 5G SA Bands DSS enabled 5G Roaming Networks
T-Mobile n1, n3, n7, n28, n38, n78   true MCC: 232 204 262 216 260 231 219 202 230

Romania

Provider 5G NSA Bands 5G SA Bands DSS enabled 5G Roaming Networks
Orange n1, n78   true  
Vodafone n78   true  

Slovakia

Provider 5G NSA Bands 5G SA Bands DSS Enabled 5G Roaming Networks
Orange n78   true  

Spain

Provider 5G NSA Bands 5G SA Bands DSS enabled 5G Roaming Networks
Movistar n1, n3, n78   true  
Orange n1, n3, n28, n78   true  
Vodafone n1, n3, n7, n28, n78   true  

Sweden

Provider 5G NSA Bands 5G SA Bands DSS enabled 5G Roaming Networks
3 n1, n3, n7, n28, n78   true  
Tele2 n1, n3, n7, n28, n78   true  
Telenor n3, n28, n78   true  
Telia n1, n3, n7, n28, n78   true  

United Kingdom

Provider 5G NSA Bands 5G SA Bands DSS enabled 5G Roaming Networks
3 n28, n78   true  
EE n28, n78   true  
O2 n28, n78   true  
Vodafone n28, n78   true  

Middle East

UAE

Provider 5G NSA Bands 5G SA Bands DSS enabled 5G Roaming Networks
DU n41, n78   false  

North America

Provider DSS enabled 5G Roaming Networks
T-Mobile false  
Verizon true