- We cannot write to the internal SD card of Android phones since around 10 years now. But use an external usb – SD card reader and it works again.
- For about 10 years I was struggling with this problem. I used the internal SD card of my Android phone for data exchange between my smartphone and my PC.
- Then I used the adapter below. There I could plug in an usb 3 mircoSD card reader. With this I could read and write to it from my Android phone. But I could plug in the mirco SD card reader also into my Ubuntu PC and read and write to it as well.
- With the adapter below, a microSD carder worked, the ethernet connection to a router worked, and charging over the adapter worked als well.
- For screen mirroring an Android phone to a PC I never found a solution which was satisfying for me personally.
- Then I found SRCPY, sreen copy over ethernet cable. This was a very good screen mirroring tool, to see my Android phone on my Ubuntu PC, and I was able to use my PC keyboard and mouse to control my Android phone in a very robust and stable way
I managed to get to work the following very compicated usb-c adapter with SRCPY over Ethernet to solve this problem:
Milestone in Research at the Meditation Research Institute of Switzerland (MRIS) – SRCPY over Ethernet:
- With this adapter a microSD card reader worked for reading and writing both from Ubuntu PC to the SD card, but also from the Android phone reading and writing to the microSD card.
- Futhermore, the ethernet adapter worked over a router to have a stable wired ethernet connection to the smartphone.
- And third, I was able to charge my Android phone over the usb-c charging plug on the adapter.
- These three option worked with ths adapter wich can be bought on Aliexpress for around 10 USD, an adapter which I was very happy that I found it.
- Maybe I use it again, for instance to use NextCloudPy over a wired ethernet cable to my Android phone.
- This all was still a complicated procedure. First I had to prime the connection via usb-c cable, then I had to plug in an ethernet cable to start SRCPY, everyting was very complicated, but worked finally.
- But I ended up having a bulky phone because of the bulky adapter which was necessary for this solution. Then I found an easier solution, with a small usb-mircoSD card reader
- An alternative which is easier is to use SRCPY over Wifi. But I use Wifi only if there is no other option for privacy reasons.
- The solution I found now is very simple. The complex adapter I had for my Android phone has a SD card reader I can read and write from it. And I can also plug in an usb 3 SD card reader and it worked as well.
- No bulky adapter needed, only a small USB-c SD card reader necessary and it works again.
- With Ubuntu I had often issues that the microSD card was damaged and not readable anymore if I exchanged it from an Android phone to my Ubuntu PC. Linux is not so handy with external devices as Windows.
But it works much better with Kubuntu than with Ubuntu. Kubuntu checks if the SD card has issues if I plug it in. And then Kubuntu offers to fix it, and then the microSD card can easily be mounted in Kubuntu. This procedure seems to be well developed in Kubuntu.
- Reading and writing from my Kubuntu PC to the microSD card and reading and writing to the same microSD card from my Android phone works now without any issues.
- And it is simple and uncomplicated.
- Previously data exchange from an Android phone to a PC required Google Drive or NextCloudPi.
- But with this small external microSD card reader, it works also over a micro SD card.