I’ve been using a Hong Kong SIM card since 2019. Back then, I had a company in Hong Kong and needed KYC verification. I’ve been using this card ever since because I registered a bunch of stuff with it. At the time, it cost 338 HKD per month, and it worked across the Greater Bay Area, covering Hong Kong, mainland China, and Macau. If I remember correctly, it offered around 200GB for Hong Kong, 50GB for mainland China, and the best part was that if you exceeded the limit, it downgraded to 3G but still provided unlimited data. Now it seems like they’ve switched to unified data plans. I still occasionally use this card when traveling abroad because the roaming fees are relatively cheap, and it offers decent options. However, Hong Kong SIM cards now require KYC verification, and you must have a residential address in Hong Kong to apply. It’s super convenient for friends in Shenzhen. For a long time, this card was actually my main SIM card. Later, when I moved to Singapore, I started using a local Singapore SIM card, which I’m still using now. But this card isn’t very friendly for roaming—it supports fewer roaming locations, and the fees are ridiculously expensive. Then a friend introduced me to this China Unicom SIM card in Singapore, which is perfect for people who frequently travel between China and Singapore. The price is pretty affordable, and the roaming fees aren’t bad either. This card also requires KYC verification, and you need Singapore residency for the KYC process. Plus, one KYC can only register up to five SIM cards, so it’s harder for non-Singapore residents to get one. I’m not too familiar with other options. Nowadays, most SIM cards require KYC verification. That said, some DePin projects’ eSIMs are pretty good, like the ones from @XPINNetwork—I’m personally using theirs.