Here are the known compatible devices with the popular iOS and Android device brands. If your device is not listed here and you want to confirm if it is eSIM-enabled, feel free to contact the provider:

iPhone:
iPhone 14 models
iPhone 13, 13 Mini, 13 Pro, 13 Pro Max
iPhone 12, 12 Mini, 12 Pro, 12 Pro Max
iPhone 11, 11 Pro, 11 Pro Max
iPhone XS, XS Max
iPhone XR
iPhone SE (2020 or 2022)

Samsung:
Galaxy S23, S23+, S23 Ultra
Galaxy S22, S22+ 5G, S22 Ultra 5G
Galaxy S21, S21+ 5G, S21+ Ultra 5G
Galaxy S20, S20+, S20 Ultra
Galaxy Note 20, Note 20+, Note 20 Ultra 5G
Galaxy Fold, Z Fold 2, Z Fold 3, Z Fold 4
Galaxy Z Fold 2 5G, Z Fold 3 5G
Galaxy Z Flip, Z Flip 3 5G, Z Flip 4

The following models are not eSIM-compatible at the time of writing: Galaxy S20 FE all models, Galaxy S21 FE all models, Galaxy S20/S21 (US), Galaxy Z Flip 5G (US), Note 20 Ultra (US & Hong Kong), Galaxy Z Fold 2 (US & Hong Kong).

Google:
Pixel 7, 7 Pro
Pixel 6, 6a, 6 Pro
Pixel 5, 5a
Pixel 4a, 4a 5G
Pixel 4, 4 XL
Pixel 3a, 3a XL
Pixel 3, 3 XL

The following models are not eSIM-compatible at the time of writing: Pixel 3 from Australia, Japan, and Taiwan, or from any US / Canadian carriers except Sprint and Google Fi; Pixel 3a from South East Asia, Japan, and Verizon US.
Huawei:
P40, P40 Pro
Mate 40 Pro

Xiaomi:
Xiaomi 12T Pro
Xiaomi 13, 13 Lite, 13 Pro

Others
Oppo Find X5, Find X5 Pro
Oppo Find X3, Find X3 Pro
Oppo Reno 5A, Reno 6 Pro 5G
Oppo A55s
Motorola Razr, Razr 5G

This plan comes with unlimited data, however the network providers do apply a Fair Usage Policy. If you consume more than 2 GB per day, you will find that your speed will be throttled to 512 kbps. This speed should only last 24 hours (sometimes less) before you are back to high-speed data.

This plan does not come with a number, so no call and text service will be available.

After purchase, you have 30 days to activate your plan. Otherwise, your plan will automatically activate on the 30th day and expiry will start after you activate your plan. For example, if you activate a 7-day plan on Jan 1, 2023 at 4pm, it will expire on Jan 8, 2023 at 4pm.