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Ink cartridge number is 65. I haven’t setup iPhone printing yet, so not sure. However, shouldn’t be hard.
Sorry, there was a problem. Please try again later.The Deskjet 3755 takes the #65 cartridges for both the tri-color and black. Setting it up for printing is quite simple-the main thing is to make sure that both the printer and phone are on the same network so they can communicate. And you'll want to download the free HP Smart App to control the printer functions from your phone.
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