I just discovered that the eSIM product range in the app is now more comprehensive. The options are varied, ranging from 1 to 30 days, so you can customize it to your travel dates. The process is instant; after payment, a QR code is sent to your email, valid for one month from the date of purchase. Internet connection is smooth and seamless upon arrival. Macau and Hong Kong support up to 5G, but Shenzhen only supports 4G. Despite this, the connection remains fast, even in underground subway stations. Apps like WhatsApp and Instagram can also be accessed without an additional VPN.