Depending on where you are located, you should be able to purchase Bitcoin Cash (BCH) directly from within the Bitcoin.com wallet by tapping on the "Buy Now" option on the "wallets" homepage.

You can also purchase Bitcoin Cash using any of the exchanges listed at the link below:

https://www.bitcoincash.org/#exchanges

Please note that although you can manage both Bitcoin Core (BTC) and Bitcoin Cash (BCH) in your Bitcoin.com wallet, you must not send BTC to a BCH address (or vice-versa).

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