All micro USB-A ports can be used with a micro USB-B cable so you either have a bad cable, adapter, or port.

Edit: This is very incorrect and my degree in Electrical and Computer Engineering should be revoked any minute now lol. I was confusing micro USB-A with micro USB 3.0 (which definitely doesn't make the mistake any better). Leaving it up though bc deleting it feels like an attempt to hide my imperfections so if anyone happens to somehow stumble across this in the future, THIS IS NOT THE WAY

I think it's actually gonna be much worse since that is clearly a 4000 year old ghoul who will be roaming graveyards long after we've all decayed into dust

Imagine if men had an actual need for an app like this

You can get rid of it pretty easily with a userContent.css file. This is the only CSS rule you'll need in there:

.logo-and-wordmark {
  display: none !important;
}

And here's a good link that explains how to use custom CSS in firefox if you're not familiar with it already.

Edit: setting browser.newtabpage.activity-stream.logowordmark.alwaysVisible to false might do the trick also

Whoaaaa blackberry ~that's my jam~

Doesn't sound like a bad idea, but there might be some better options depending on the type of media you plan on using it for.

If you're mostly gonna use it for listening to music, you should look into a PMP/DAP. I've been wanting to buy one for a while and the FiiO players seem to get a lot of love. The higher-end ones usually run Android but they'll probably be more expensive than an Xperia Z21 Compact. They're designed with audio as the main focus though. There are also a lot of cheaper options that'll give you a better audio experience than an Android phone—the FiiO Echo Mini is only $70 USD, but I don't think there's much more you can do with them other than listen to music.

I haven't looked into video playback at all, but the higher-end ones usually have screens comparable to the Z21 Compact, and I wouldn't be surprised if some have better displays. A screen as small as the ones you'll find on the Z21 or an Android PMP isn't gonna offer that great of a video experience no matter how good the resolution or refresh rate is though.

Another bonus with the higher-end PMPs is some of them can be used as a DAC, which is pretty effin rad imo.

FiiO also seems to have a pretty active modding community and some custom ROMs are available too. And if the audio quality on Xperia devices is as trash as it was on the Pixel 6 running LineageOS I was using up until last year then you're definitely gonna want to root it (if possible) and install ViPER4Android.

Another option is Rockbox. If you have a compatible MP3 player lying around, might be worth trying that before making a decision.