In the APRIL 2024 update, SIMBA users can roam in Austria on T-Mobile (Magenta), Cyprus on EPIC with VoLTE+5G.

CountryTelco
AustraliaVodafone
Austria T-Mobile (Magenta)
CyprusEPIC
EstoniaElisa
FinlandElisa
Hong KongHutchison
IndiaReliance Jio
IndonesiaTelkomsel
DenmarkNuuday (TDC)
MalaysiaCelcom
NetherlandKPN
New ZealandSpark
ThailandDTAC
PhilippinesSmart Communications
South KoreaSK Telecom
USAVerizon

Iceland, China, Japan, Taiwan, Brunei only has VoLTE and 4G data roaming.