I'm in China. My important email web Yahoo has been blocked. So I can't access yahoo email in China. I tried use My iPhone 8+ to access internet by roaming but always failed.   What can I do?   I have enabled Cellular Data , Roaming and set Network Selection as Automatic and it automatically connected to CHINA MOBILE.   Where is the problem? I did not actived ROAMING before I leaved Singapore?   Please help me. ... View more