::: faq-entry
# What are the fees?

| Operation                                                             | Fees                              |
|-----------------------------------------------------------------------|-----------------------------------|
| Sending via Lightning                                                 | 0.4 % + 4 sat                     |
| Sending on-chain                                                      | mining fees (user-chosen)         |
| Receiving via Lightning                                               | 0 (no fees)                       |
| Receiving via Lightning with insufficient liquidity                   | 1% + mining fees                  |
| Requesting liquidity                                                  | 1% + mining fees                  |
| Receiving on-chain                                                    | mining fees                       |
| Channel creation                                                      | 1000 sat                          |

\
To optimise your fees when using Lightning, check the [Liquidity entry](#what-is-inbound-liquidity).
:::

::: faq-entry
# Which version of iOS and Android are supported?

Phoenix requires iOS 16.0 or later, or Android 8.0 or later.
:::

::: faq-entry
# Is there a 'Testnet' version of Phoenix?

Yes, but only for Android. It uses Testnet coins that have no value, and is only useful for development and testing. You can download it [here](https://acinq.co/pub/phoenix/phoenix-testnet-latest.apk).

A Testnet4 version will be released soon™.
:::