Actually I live in South-East Asia and I just know how to say hello and thank you. But even if I knew I would not ask because I don't have SIM card for Internet. On GrapheneOS I would need to enable proprietary code to use a SIM cards AFAIK, so I don't have Internet. For maps I use openstreetmap offline and check everything at home before going out. So my use of smartphones is pretty much offline outdoors, which excludes Bitcoin or anythin which requires Internet. The day we will be able to pay with signatures offline with bluetooth, like what we do with multisig, and hardware wallets will be usable as a means of payment , I will take a look ;)