you need to contact apple customer service like i did, their engineering team will investigate this.. this is to confirm that they have issue with personal hotspot on secondary simcard slot.. i hope they fix this in iOS 12.1
Hello
Thanks for the reply. I saw an FAQ from StarHub.
http://www.starhub.com/personal/support/services-and-plans/mobile-roaming/prepaid-roaming.html#happy-roam
Under FAQ17, it says need to change APN to shppd.
I’m now in US. Using StarHub happy roam. Both AT&T and t mobile allows personal hotspot. My current APN is shwap though. Should have check this when I’m in HK.
Last edited: