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So you've answered your own question. If you paid with your phone, you wouldn't have to worry about taking care of your wallet.

• skizm 12y ago
  Except my phone is unreliable. My credit card doesn't run out of batteries or break if I drop it.
  • gress 12y ago
    Your credit card gets lost if you drop it. But I'll concede that battery life may be an issue for some people.