Hello to everyone, i'm writing this post because i have a very annoying problem with my new Tab S4. I bought this tablet to replace university textbooks, so i put in a 256 GB Sandisk micro SD card with a lot of PDFs that i need to read and underline. Well, the problem is that the system doesn't allow me to edit those files, and asks me to create a copy in the device's memory if i want to edit them. This is very disappointing, considering that this tablet targets university students too and its on-board memory is as little as 64 GB. I can't believe that a 2019 € 650 stuff doesn't have such a basic feature, and hope someone could help me. Thanks!
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