The Chinese SIM is the key. If you are a foreigner and want to use a phone, either use a burner phone with a Chinese SIM or use international roaming with a non

The Chinese SIM is the key. If you are a foreigner and want to use a phone, either use a burner phone with a Chinese SIM or use international roaming with a non-Chinese SIM. You should not use a Chinese SIM. Other restrictions are tied to the account which are based on the region of the Apple account, so any phone with a Chinese account will have various restrictions.