Hi all, I've been waiting and searching around seeing if I was able to find any kind of fix or something for some time now but it's beginning to get to me far too much.
My problem is when I had the HTC Aria I used to have the audio stored on my phone and plug it into my car's USB connection and the headunit would search the device and find all audio to play through the headunit which I was then able to use my controls on the steering wheel. After some time I bought the Samsung Galaxy S2 (l9100) and to my excitement received the whopping 16GB internal storage as a bonus, so I filled that. And heres where my problem comes in, I cant seem to make my headunit search the internal storage and play all that music, It will only search the SD card (external).
Now from reading all over the internet I've been led to believe by any posts that relate somewhat to this that it wont be possible for this to work, what frustrates me though is that it is possible. I've rooted and flashed various custom ROM's to my device (VillianROM first, Cyanogenmod Nightlies second and now MIUI yesterday). I have successfully had the headunit read my internal (newer and more songs) upon connection twice that I can recall now, I think the first time was after first connection to the car after the cyanogenmod flash and today when I first connected it again. Which led me to believe that it was working and then was just applying a new theme on my phone while hanging at a friends then was taking another friend home and plugged it in and back to only reading from my SD card (external - old crap music) and can't figure out why it has worked twice if it is not possible.
The reason why I am determined to figure this out is due to 16 GB internal storage and only 1 GB external storage and I wish to use my phone to its full potential.
While I'm at it, I guess I should mention my other problem which adds to my determination to get the USB connection working with my car. The USB connection is a much clearer & louder playback (Higher quality) then the AUX (current alternative) and to be safer while driving by using my steering controls.
But since flashing to Cyanogenmod and MIUI (cannot recall whether I had this problem on VillainROM) I've noticed the volume in headset mode (when I have something plugged into the headphone jack - ie, AUX, etc) and I begin turning up the volume from quietest to loudest it get notably louder each press until halfway or a press before halfway and then does not become any louder, which I also think may be making the audio less clear and loud when connected via AUX to my car.
Thanks in advance to anyone whom contributes.
I am usually stubborn enough to sort problems out myself, but for the first time I am asking for help on a community forum.
Anyone have any idea what I'm talking about?
If you need to know anything else don't hesitate to ask.
CM7 volume is a known issues or least it was last time I checked.
Try turning on/off usb debugging is my best guess.
Done that, today at some point it randomly read my internal storage and right now I'm constantly reconnecting it with no success.
The frustration continues as it is obviously possible but appears to have a mind of its own.
With my little knowledge when it comes to android and their platform, is it possible it could be there mount priority of the storage or the internal having something stored on it such as an app that could be in use by the phone which could be preventing the drive from being read?
what the hell... I have the exact OPPOSITE problem.
With my headunit its been only mounting the internal storage, but most of my music I put them in the external since I got a 32gb card!
Could it be mounting the smaller sized storage first? =P
-EDIT-
Actually it should be easier to do it the way you want it to (i.e mount internal only)
just unmount the sd card via the android settings -> storage -> unmount
and once it is unmounted, connect the usb to the car.
The catch is of course if you wanna use the external again you have to manually mount it via the settings.
more info but no real help
I have seen a very similar problem and I feel like I can reproduce it.
I've got a 2010 Hyundai Tucson - it has a USB/aux port in the dash console and can accept anything that can be mounted as flash media, flash drives, ipods, etc can all play back music using the Nav display to browse and playback files from the device.
The stereo plays back music perfectly through both my wife's old and new phones. An original MyTouch 3g and a MyTouch 4g. She's had no problem mounting and reading the files from her internal storage. She can playback music on her phone, the car even remembers her place and resumes where she stopped a song.
I, on the other hand, cannot easily get the car to playback files from my older or newer phone. I started with the original android, the HTC Dream/TMobile G1 then later upgraded to a Samsung Galaxy S 3g/TMob Vibrant. What's the difference? I've run modded android OS on my phones and my wife has not. I had been running CM5 and later CM6 on the G1/Dream until I retired it. Lately I've been using a MIUI mod, Lithium 360, on the Vibrant.
When I plug in to the USB on the car, the phone gives me the mount prompt and the car begins searching for files. Eventually both fail to make any progress.
I've tried many fixes including turning on/off USB debugging, I've tried wiping Dalvik cache, Wiping regular cache, I believe I even did a factory reset, flash zip, full re-install on a road trip just to see if I could get the car to read my files. What I did discover is that the problem is simply not hardware related. I could boot to recovery and use clockwork to mount USB storage. Files were seen instantly and played back fine. However, this doesn't do me any good as I can't really use the device for anything else (safety first ) and not to mention that there's no way I want to run the phone with the screen on for hours. I know there are simple workarounds here. But carrying an aux/patch cable is an extra hassle, and since my phone can hold enough data for my average means, I often don't remember to bring a flash drive with me everywhere. Besides, the USB cable in the dash does double duty, charging while giving access to files.
To be fair, I've only used CM based mods (according to wikipedia, MIUI is somewhat based on Cyanogen) on my phone and have not tried out any other android software. I don't know if that's a connection or not, but it's the only lead I have right now. There's got to be something different about the USB settings in the OS itself compared to stock Android. Is there an apk file one could flash and test somehow?
---------- Post added at 04:56 AM ---------- Previous post was at 04:49 AM ----------
http://forum.xda-developers.com/showthread.php?t=617333&highlight=car+stereo
This thread is above seems to be describing the same problem. This however appears to be an aftermarket stereo.
[Q] After mounting it *immediately* dismounts
Connecting to a Samsung TV (USB debugging ON and clicked on USB Storage until it turns from green to orange) and then browsing USB (Menu => USB device) it mounts the USB ("Android 11GB" which is presumably the internal SD) and then dismounts within a second and restarts initializing. An ordinary USB stick (single file system) does mount.
Is this because the Galaxy S2 mounts two file systems at a time and the TV cannot handle this. Is there an app which only mounts ONE filesystem on the Galaxy ?
Hallo everybody!
Some days ago my HI802 wich is a rebrand of gk802 android dongle arrived with dhl.
I order with aliexpress.com for $ 99,-
The HI802 has
- SoC – Freescale i.MX6Q Quad Core Cortex A9 Processor with Vivante quad GC2000 GPU,
· System Memory – 1GB RAM
· Storage – 8GB NAND Flash Memory (on a exchangeable micro SD card)
- micro SD card slot for card up to 32 mb
· Video Output – HDMI
· Connectivity – Built-in Wifi 802.11 b/g/n and Bluetooth
· USB – USB Host + USB OTG
The Hi802 was delivered together with an 2000 ma wallplug, and a proprietary! usb to micro-usb cable.
After unpacking the dongle and connecting it to the supplied charger with supplied usb to micro-usb cable, connecting it to my tv with a hdmi-cable, and plugging in the Mele F10 airmouse dongle into the HI802's usp-port the Hi802 booted up, so i thought erything would be ok.
Unfortunatly the airmouse was not recogniced and i couln't see any mouse-pointer on my tv.
So i tried some normal wired usb-mice, but also with the same effect, also no keyboard worked with the HI802.
After a lot of emailing with the dealer (kimdecent) and searching a lot of other places on the internet, i finally got my HI802 to work with mice and keyboards and also my Mele F10 flymouse:
The usb to micro usb-cable that was deliverd with my device is a proprietary one and non-standard.
After replacing the cable with a standard-cable, all wireless mice and keyboards worked.
Also chargers that can deliver 2000 ma or more work with that device.
The firmware can be updated very easy:
1. Copy all image-files to the external sd-card.
2. Insert the end of a paper-clip into a little whole besides the micro-usb, and then connect the stick to the power-supply.
3. The stick will then boot into recovery-mode and with a connected mouse or keyboard you can select 'update all system files' from menu.
4. Update needs a few minutes
5. Select 'reboot'
I updated the firmware to a rooted version: rc2V1.65.3 without any problems.
The wireless connection of the stick is quite good.
I connected to my router which is about 30 feet away and have 2/3 signal strengh and can download with about 20 - 25 mb/sec and is sufficient to watch most movies.
I already downloaded a lot of Apps, nearly everything works fine, a lot of apps can be moved to internal SD card to save free space.
Also XMBC works like a charme, I watch a lot of videos and movies over wireless NAS.
Some issues i still have:
The HI802 doesn't work with active (powered) usb-hubs, nothing connected to these hubs works, so you should use passive hubs only.
Using an external sd-card with the HI802: The external sd-card seems to get mounted read only with wrong rights, so you can' use it with your apps (i tried to use Backup and Restore to backup).
You have to mount it with r/w-rights in root-explorer manually ( that's the /mnt/external_sd/ folder)
When i connect usb-sticks or harddrives over a passive hub, FAT32-formatted media can be mounted, but the HI 802 can't read from those media, althought the files show up with root-explorer. (I will ty to fix this issue with root explorer in the next days!)
I also couldn't get the HI802 to work with NTFS, also apps that normally mount NTFS-sticks (chainfires stickmount) on other devices without any problems did not work. (maybe also munted r/o ?)
Did anybody of you also have the same problems?
Sadly these are no longer available at this time from Aliexpress. I'm very interested in playing with the quad core model.
We seriously need some more distributors in the US.
Unfavorable review of GK802
There is a Youtube review portrays the GK802 graphics performance as substantially inferior to the MK808. I can't post the link as I do not have sufficient posts but if you google "SZEALZ GK802 Quad-core HDMI Stick PC -- Graphics Tragedy" you will find it. It seems difficult to understand or am I missing something?
re: review
Well the Vivante quad GPU used in Hi802/GK 802 may not be as fast as a Mali400, but it is definitly fast enought to play most games and to decode nearly all videos in hardware up to 1080p.
I tested a lot oft different 1080p videos in avi, mkv etc., and all oft them were played fine without any dropped frames or lags.
When configured correctly (large network-buffering and using hardware-acceleration), you can use mx-player, bs-player and even xmbc to play nearly all video formats.
The only problem at the moment is the missing support for harddrives and thumbdrives, not all nas can deliver 10 MB/sec over wifi.
Is it true that there are some physical differences between the gk802 and the hi802, or both of them are exactly the same? I'm asking this because I remember I read somewhere that gk802 has a heatsink while the hi802 does not..can anyone confirm this???
Hi802/GK802
As far as i know, there are no physical differences, everything is the same, even both devices run with the same firmware.
I only have the HI802 and have only seen pictures of the GK802.
There is no heatsink, the heat is dissipated away from the processor over the metal shelf of the dongle.
This seems to be sufficient for the 10 watts the dongles are consuming.
I just got my gk802 today from geekbuying for $99
I plugged in a 32gb jump drive and the device found all my media and played it with no problem. My RC11 air mouse remote was found and it works fine. I plugged in a logitech 260 cam to the usb hub and the pictures/video were great. However, when I record sound I get a buzzing sound even with the cam unplugged which has a mic. Also, I have nube problem. I can't figure out how to move an app using the
RC11. I can't move it from the home screen even an inch let alone to another screen. It is not like my Android phone and like I say, I am a nube.
NOTE=werttrewis;36396614]Hallo everybody!
Some days ago my HI802 wich is a rebrand of gk802 android dongle arrived with dhl.
I order with aliexpress.com for $ 99,-
The HI802 has
- SoC – Freescale i.MX6Q Quad Core Cortex A9 Processor with Vivante quad GC2000 GPU,
· System Memory – 1GB RAM
· Storage – 8GB NAND Flash Memory (on a exchangeable micro SD card)
- micro SD card slot for card up to 32 mb
· Video Output – HDMI
· Connectivity – Built-in Wifi 802.11 b/g/n and Bluetooth
· USB – USB Host + USB OTG
The Hi802 was delivered together with an 2000 ma wallplug, and a proprietary! usb to micro-usb cable.
After unpacking the dongle and connecting it to the supplied charger with supplied usb to micro-usb cable, connecting it to my tv with a hdmi-cable, and plugging in the Mele F10 airmouse dongle into the HI802's usp-port the Hi802 booted up, so i thought erything would be ok.
Unfortunatly the airmouse was not recogniced and i couln't see any mouse-pointer on my tv.
So i tried some normal wired usb-mice, but also with the same effect, also no keyboard worked with the HI802.
After a lot of emailing with the dealer (kimdecent) and searching a lot of other places on the internet, i finally got my HI802 to work with mice and keyboards and also my Mele F10 flymouse:
The usb to micro usb-cable that was deliverd with my device is a proprietary one and non-standard.
After replacing the cable with a standard-cable, all wireless mice and keyboards worked.
Also chargers that can deliver 2000 ma or more work with that device.
The firmware can be updated very easy:
1. Copy all image-files to the external sd-card.
2. Insert the end of a paper-clip into a little whole besides the micro-usb, and then connect the stick to the power-supply.
3. The stick will then boot into recovery-mode and with a connected mouse or keyboard you can select 'update all system files' from menu.
4. Update needs a few minutes
5. Select 'reboot'
I updated the firmware to a rooted version: rc2V1.65.3 without any problems.
The wireless connection of the stick is quite good.
I connected to my router which is about 30 feet away and have 2/3 signal strengh and can download with about 20 - 25 mb/sec and is sufficient to watch most movies.
I already downloaded a lot of Apps, nearly everything works fine, a lot of apps can be moved to internal SD card to save free space.
Also XMBC works like a charme, I watch a lot of videos and movies over wireless NAS.
Some issues i still have:
The HI802 doesn't work with active (powered) usb-hubs, nothing connected to these hubs works, so you should use passive hubs only.
Using an external sd-card with the HI802: The external sd-card seems to get mounted read only with wrong rights, so you can' use it with your apps (i tried to use Backup and Restore to backup).
You have to mount it with r/w-rights in root-explorer manually ( that's the /mnt/external_sd/ folder)
When i connect usb-sticks or harddrives over a passive hub, FAT32-formatted media can be mounted, but the HI 802 can't read from those media, althought the files show up with root-explorer. (I will ty to fix this issue with root explorer in the next days!)
I also couldn't get the HI802 to work with NTFS, also apps that normally mount NTFS-sticks (chainfires stickmount) on other devices without any problems did not work. (maybe also munted r/o ?)
Did anybody of you also have the same problems?[/QUOTE]
Which firmare version do you have?
I am using the lates 1.65.4 rooted version for the gk802, which works quite well and is really fast, but I am still having no success to access any files on ecternal harddisk and thumbdrives, although the latest firmware should have fixed that.
Do you use any apps to mount your drives, or are they automatically mounted?
The Hi802 comes with android 4.0.4.
Normally you just open the apps-screen by clicking the ... menu on the right upper side.
Than you can drag and drop your apps to the homescreen.
jcburkha said:
I plugged in a 32gb jump drive and the device found all my media and played it with no problem. My RC11 air mouse remote was found and it works fine. I plugged in a logitech 260 cam to the usb hub and the pictures/video were great. However, when I record sound I get a buzzing sound even with the cam unplugged which has a mic. Also, I have nube problem. I can't figure out how to move an app using the
RC11. I can't move it from the home screen even an inch let alone to another screen. It is not like my Android phone and like I say, I am a nube.
NOTE=werttrewis;36396614]Hallo everybody!
Some days ago my HI802 wich is a rebrand of gk802 android dongle arrived with dhl.
I order with aliexpress.com for $ 99,-
The HI802 has
- SoC – Freescale i.MX6Q Quad Core Cortex A9 Processor with Vivante quad GC2000 GPU,
· System Memory – 1GB RAM
· Storage – 8GB NAND Flash Memory (on a exchangeable micro SD card)
- micro SD card slot for card up to 32 mb
· Video Output – HDMI
· Connectivity – Built-in Wifi 802.11 b/g/n and Bluetooth
· USB – USB Host + USB OTG
The Hi802 was delivered together with an 2000 ma wallplug, and a proprietary! usb to micro-usb cable.
After unpacking the dongle and connecting it to the supplied charger with supplied usb to micro-usb cable, connecting it to my tv with a hdmi-cable, and plugging in the Mele F10 airmouse dongle into the HI802's usp-port the Hi802 booted up, so i thought erything would be ok.
Unfortunatly the airmouse was not recogniced and i couln't see any mouse-pointer on my tv.
So i tried some normal wired usb-mice, but also with the same effect, also no keyboard worked with the HI802.
After a lot of emailing with the dealer (kimdecent) and searching a lot of other places on the internet, i finally got my HI802 to work with mice and keyboards and also my Mele F10 flymouse:
The usb to micro usb-cable that was deliverd with my device is a proprietary one and non-standard.
After replacing the cable with a standard-cable, all wireless mice and keyboards worked.
Also chargers that can deliver 2000 ma or more work with that device.
The firmware can be updated very easy:
1. Copy all image-files to the external sd-card.
2. Insert the end of a paper-clip into a little whole besides the micro-usb, and then connect the stick to the power-supply.
3. The stick will then boot into recovery-mode and with a connected mouse or keyboard you can select 'update all system files' from menu.
4. Update needs a few minutes
5. Select 'reboot'
I updated the firmware to a rooted version: rc2V1.65.3 without any problems.
The wireless connection of the stick is quite good.
I connected to my router which is about 30 feet away and have 2/3 signal strengh and can download with about 20 - 25 mb/sec and is sufficient to watch most movies.
I already downloaded a lot of Apps, nearly everything works fine, a lot of apps can be moved to internal SD card to save free space.
Also XMBC works like a charme, I watch a lot of videos and movies over wireless NAS.
Some issues i still have:
The HI802 doesn't work with active (powered) usb-hubs, nothing connected to these hubs works, so you should use passive hubs only.
Using an external sd-card with the HI802: The external sd-card seems to get mounted read only with wrong rights, so you can' use it with your apps (i tried to use Backup and Restore to backup).
You have to mount it with r/w-rights in root-explorer manually ( that's the /mnt/external_sd/ folder)
When i connect usb-sticks or harddrives over a passive hub, FAT32-formatted media can be mounted, but the HI 802 can't read from those media, althought the files show up with root-explorer. (I will ty to fix this issue with root explorer in the next days!)
I also couldn't get the HI802 to work with NTFS, also apps that normally mount NTFS-sticks (chainfires stickmount) on other devices without any problems did not work. (maybe also munted r/o ?)
Did anybody of you also have the same problems?
Click to expand...
Click to collapse
[/QUOTE]
werttrewis said:
Which firmare version do you have?
I am using the lates 1.65.4 rooted version for the gk802, which works quite well and is really fast, but I am still having no success to access any files on ecternal harddisk and thumbdrives, although the latest firmware should have fixed that.
Do you use any apps to mount your drives, or are they automatically mounted?
The Hi802 comes with android 4.0.4.
Normally you just open the apps-screen by clicking the ... menu on the right upper side.
Than you can drag and drop your apps to the homescreen.
Click to expand...
Click to collapse
I will be honest, I really don't know much about what I am doing. But, here it goes. I am using version 4.0.4 Android ICS Build version is R13.4-RC2V1.65.3. As far as the drives go, I plugged in the powered hub that I bought with the unit along with a cam that I had and a 32gb jump drive (w/ movies and music). That is it! The GK802 found everything and I didn't have to mount anything. Even the camera video worked fine. The sound is great except for when I try to record audio, all I get is buzzing. I even downloaded xbmc from the geekbuying.com website and it works without a hitch. If it was not for the buzz I get, I would be a happy person. PS - I also plugged in a wireless mouse to the same usb hub because I found that I could not do some things with the air mouse remote alone. (like moving apps and playing angry birds) Everything is fine with it.[/QUOTE]
I have nothing but problems with my newly purchased hiapad hi-802. I bought a mele f10 wireless air mouse with it. The mouse works perfectly with the supplied micro-usb charger. However any video I play freezes and crashes after 30 seconds to 1 minute. Also Bs player is the only video decoder that works. Everything else crashes. I bought a second charger 5v/2000ma and it works except the mele f10 mouse doesn't work. I updated the software to 1.65.4 and I applied the usb fix on hiapad site but the mouse only works with their supplied charger. So I can either use the mouse with no video playback, or video playback but no way to get to the videos... Any suggestions?
Sure. Just ditch the airmouse and use an android phone or tablet with droidmote. Much cheaper, easier and - I think, never having tried one of those airmice - probably also better!
hiapad 802 usb fix file
Hi, they removed the usb fix from their website and I need to download a working firmware.
Do you still have that file?
I've built an AOSP android image for it but I need to be able to compare both boot logs.
rahul1023 said:
I have nothing but problems with my newly purchased hiapad hi-802. I bought a mele f10 wireless air mouse with it. The mouse works perfectly with the supplied micro-usb charger. However any video I play freezes and crashes after 30 seconds to 1 minute. Also Bs player is the only video decoder that works. Everything else crashes. I bought a second charger 5v/2000ma and it works except the mele f10 mouse doesn't work. I updated the software to 1.65.4 and I applied the usb fix on hiapad site but the mouse only works with their supplied charger. So I can either use the mouse with no video playback, or video playback but no way to get to the videos... Any suggestions?
Click to expand...
Click to collapse
Okay, so here's the dilemma. I have they MINIX neo x8 H. For the last couple of months I've had it connected to a laptop hard drive that I have stuck into an enclosure. That's where I kept all my movies. I have recently began running out of space. I also have a lot more media on various other hard drives and my laptop. I wanted to consolidate them all on to one drive. I bought a Seagate 3 terabyte external drive because it was on sale. The first thing I did when I got it home, as I do with all hard drives when I buy them, was to get rid of the crap they stick on it from the factory. I don't need auto backup software and since I'm using Android, and these are all Windows applications I really had no use for them anyway. So I formatted that and repartitioned it into several drives. I made a 1.5 terabyte partition for my movies, a 1 terabyte for the Disney and Christmas shows for the kids, a 100 gigabyte partition for my music, and then with the remainder of the space I made miscellaneous partition. I formatted them all NTFS, and when I put my stuff on it everything seemed fine. Windows has no problem seeing each drive, and I can play all the content perfectly. However, here's the problem. When I hook it up to the Android box, it only sees a couple of the partitions. As you know it will show your USB drives as, sda1, sda2, etc. Well, when I hooked it up it showed sda1, sda3 and sda4. Sda2 did not show and also, it showed sda1 as blank. When I unplugged it and hooked it back up to my laptop, everything was fine.
I tried messing with it a little bit, set the first partition is primary, tried setting partitions to active, nothing really made much difference. I then merged the last two partitions, and merged the second and third partitions after that. That left two partitions, and Android will not see either one of them now. When I go into my file explorer and go down to dev/block I can see sda1 and sda2 there but cannot access them. Please help me so I don't have to fix it with a hammer or a big rock.
Hi there
I own a fairphone wich suddenly dead a few weeks ago (won't boot, wont charge, black screen).
Since murphy is great, I relealize my backup procedure wasn't working for my internal storage (but worked great for my sd card wich I don't care .
So my goal is to find a way to dump the 32gb emmc internal chip to a card in the phone's sd card slot, or downloading a dump of this even by serial ..
My first attempt is to use the uart port inside the phone, to see if it's says something usefull.. It seems to do, but for weeks I can't have anything more than garbages (like parity errors or grounding defect).
I have by now:
- tried 3 differents pl2303 usb/serial adapters (working perfectly for beagleblackboard & olimex arm boards), 1 motG rs232 (real uart to rs232),
- tried putty (with serial settings) and differents terminal emulators (outport, coolterm, telix on dos)
- started with 115200bps/8/n speed settings and a bunch of variations ...
- soldered at first tx/rx & gnd directly on the FP2 board and since, bought the "real" connector from mouser.com....
The uart/bootloader say something but I definitevely can't read it... Can someone help me ?
Yes, there is working OTG on the phone.
I can confirm that it works ok when the flash-drive is formatted in FAT32.
If it is in NTFS the phone doesn`t even detect that you have inserted something.
I am using this adapter: Mcdodo OTG MicroUSB la USB 2.0. I have also tried regular no brand cheap OTG cables and they also work.
Through it I can transfer files from the phone to flash drive at around 35MB/s.
The files can be accessed through the integrated file manager app.
The time for initialization of the drive in the phone is few seconds, I don`t have bigger flash drive than 32GB to try but for it I wait about 10 seconds just to be sure.
You can copy, write, move, delete, rename and whatever you want with the files between the phone and the flash drive. As well directly playing video/audio files.
Do not forget after do what you do to safely eject the drive! Otherwise you risk file system corruption of the flash drive.
Steps:
You can do that in menu "Device maintenance" - tap the "storage" button
then tap the vertical three dots button in the upper right corner
tap "Storage settings"
then the last row to the bottom should be named whatever is your flash drive or just USB drive - tap the triangle on the right side of the row and wait for the message "..flash drive name... unmounted successfully "
This is it. Now you can pull out the drive safely.
====================
I have also tested the output with attached usb fan (rated current 1A) but I guess it was little bit much because its revolutions per minute were little less than when used with power bank (rated output 2A) so if you attach stuff be aware for their consumption. I use USB power meter to trace power consumption. So if you want to use an usb fan should better be rated for consumption of no more than 0.5A, just to be sure.
I have also tested it with usb laptop lamp. This was no problem as the lamp consumption was about 0.3A.
Yes, I have also tried with an SD card reader with two slots, it was Kingston MobileLite G4. The phone didn`t see it at all. I guess it`s something related to the two slots because the card inside was in FAT32, and yes, I tried either slot separately and with two cards.
Anyway, the normal flash drives are working ok.
======================
I should probably add exactly what is my model.
My model is SM-A750FN, android 8.0.0 with android security patch level: september 1, 2018.
My model is the one with 4GB ram and 64GB internal memory.
It is the one sold in Europe.