More info please. Do you need the SD card reader because you are swapping books out? If so, you should know that most ereaders in the US no longer have SD cards. You can get past that by getting a Kindle e-reader that has 3G. Then you can send mobi files directly to her ereader and she can download using cell service (it's free). You can convert epub to mobi using Calibre. Forget the pdf. If you absolutely need pdf, then your best bet is to get her a Fire Tablet 10.1. However, she may find that too heavy to read - I know I do and I just read magazines on it. Many functions are so dependent on wifi access, I'm not sure how well it will work, but you CAN sideload using an SD card but you may need to add a reading app so it can find the additional library. I have 2 fires whose wifi has mostly failed, but they otherwise work and I just use them for sideloaded audiobooks, music and magazines now. Only a handful of the apps, like the kitchen timer, work well without wifi.
A new kindle with 3g may be out of your price range ($200), but they have a variety of used or refurbished at Amazon that would work. Just search Kindle 3G. I have both a Kindle Keyboard and Kindle Touch with 3G and they worked just fine getting downloads at my late brother's home (no wifi there either). I do the same for my sister on her 3g Touch (she only got wifi 6 weeks ago). She asks me what she wants and if I have it in epub, I convert to mobi and email it to her unit. She deletes them off as she finishes reading them. The current daily limit for downloading is 50 mg, but that's 8-12 books depending on how big they are, fewer if a lot of illustrations.
I should add that you need to look to a PAPERWHITE or refurbished VOYAGE with 3g if you want the backlighting. As far as I know, only the Kindle has a cell feature to enable you to download without wifi, but if I'm wrong, someone will post!
Finally, if your mom is in a cell service dead zone, going anyplace where cell phones work should work. The books just accumulate in the Kindle account until they are downloaded. Doing a refresh brings them down. If you have a LOT of pdfs, consider getting ABBYY Transformer as it does PDF conversions quite well (novels, not textbooks). It will convert to epub, you can do a spell check and then convert to mobi.
Last edited by Tarana; 10-17-2018 at 09:00 PM.
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