yashsingh1/xdaforums huggingface dataset:
[Android Q&A, Help & Troubleshooting] mw210461:
I got into a scary looking Chinese 'boot menu' when starting the Voyo while pressing Power and VolDown at startup.

Apparently the first line was a 'self test' as the thing started to loop through all kind of checks. I was happy to escape unharmed. Usually I would pull the battery, but this thing does not provide easy access to its innards..

My experience with Android is limited, I recall Clockworkmod and some flashing on older devices. TWRP appears to have replaced the ClockworkMod stuff?

A neat and comprehensive tutorial about this would certainly be helpful, also warning what NOT to try. Must study..

The 4PDA folks seem to have something written up, but it is unreadable in the xlation.

The Q101 4G battery is definitely NOT 5000mAh, but just 4000mAh, verified.

BestGear is still arguing with me over the Android 5/6 fakery, although the evidence is clear: It is Lollipop_MR1, no Marshmallow API>22. Not a deal breaker, more the disappointment of having been tricked - I wanted to see Android 6.0 and benefit from security and other improvements. I will NOT let GB off the hook that easily, as they DO know now about the fake OS, and the fake battery. And keep selling it as 'Android 6.0' and '5000mAh'

Not trusting the low voltage trigger I will simply rely on my 'Battery Voltage' app, ignore the percentage display altogether and shut down at a safe 3.5V from now on. I do not want to stress the battery unnecessarily, as it cannot easily be replaced.

Tomorrow is 'road test' time, OBD2 fuel measurements/GPS and navigation in the car, pimping my old Mercedes with a 10in monitor this way 8-)

Overall I am still happy: 4x larger screen area than my 5" smartphone and almost as useful (just lacking some sensors).
[Android Q&A, Help & Troubleshooting] mw210461:
For those following this thread:

I carefully tested the low voltage shutdown of my Q101 again : It DID trip at 3.34V and powered the tablet down.

The device would then take a full charge without problems, ramping up to 4.15V, the total capacity charged was 3960mAh.

So much for the 4900mAh/5000mAh claim by the manufacturers and vendors. I wonder what is written ON the battery inside?

A phony phone alright, so many false specifications.

For 1/7 the price of an iPad I can live with it, I guess :laugh:
[Android Q&A, Help & Troubleshooting] mw210461:
Wow, that is A LOT of info, I must digest it and see if I can follow it, thanks!

Yes, I am NOT happy about KingRoot either (never used it before), noticed all its weird actions and add-ons, that keep nagging me. The switch-over to SuperSU described elsewhere did not work for me.

I will ask my Chinese friend to translate the funny Chinese boot menu for me, just to learn which functions are offered there.

For now I understand:

- get and install Flashify

- use it to to back up StockRecovery

- use it to install the TWRP ZIP file

- once TWRP is installed use this one to back up all device partitions (It will start the same way as the current boot menu, i.e. by Vol- & Power?)

From there on it all sounds a little muddy to me, so I am not sure if I can/should do all this?

I am a little afraid about hidden trojans and other nasty stuff added by these questionable manufacturers, so your clean wipe DOES sound appealing. Must study and decide.

SD card support:

My 64GB Sandisk UHS-1 SDXC card arrived, but was NOT recognized by the Voyo in its native exFAT format (isn't Android supposed to 'like' exFat over other formats?). By converting it to a simple FAT32 partition I managed to make it accessible. Enough room for a full-blown Offline Wikipedia (Kiwix), in small file chunks, but still very useful.

Accessories:

Also I finally got my protective case from AliExpress. While looking brown in the ad it really is GOLD colored! Shiny on the outside, just like this Voyo... So watch out when ordering these sleeves, choose a less 'tacky' color!

The vendor even added a screen protector foil for free, all for about $6.5, I am happy to have a better protection against blemishes. Not sure if these cases will fit both the Voyo and slightly different Teclast models, it fits snug on the Q101.

Still waiting for the needed 2A replacement charger from GB and a car fixture so I can take it on the road safely. TomTom froze after 10min during the first test of GPS, not sure what is going on. Will try other navi apps, so I can enjoy the large 10in display on the road.

Hopefully more users will get their Q101 4G and can tell more about their experiences, findings and issues.

Gearbest still sells it as "Android 6.0" and "5000mAh" battery, so I announced a crusade against them for deceiving their customers while being fully aware of the fake specifications.

If I had known about these serious deviations I would probably have NOT bought it in the first place. Some features of API23 sounded cool to have (binding of external memory, app privilege control etc).
[Android Q&A, Help & Troubleshooting] Pxoeb6mU:
img file

That will still get you to that chinese menu.

As I described above in the EDIT, you need to use "adb reboot recovery" while connected via USB to boot into TWRP after flashing it. This will work either while the android system is running normally, or while you are at that chinese menu you get by Vol- + Power. It's very likely that one of the entries in the chinese menu would do the trick too, but I haven't bothered trying to figure it out since adb works while in that menu, so even if you brick the normal system, you can still use adb to boot into TWRP.

Well, if it's added by the manufacture instead of later, it's in the system image and a wipe isn't going to get rid of it. But based on the firewall logs I looked at so far, the base image seems pretty clean with the possible exception of the three MTK processes I mentioned, and for them I'm pretty sure their calling home is MTK trying to collect diagnostic information and not true maliciousness. But it's still data flowing out that isn't required or desired, so just block it with a firewall.

At the price I didn't expect more than what I got, and after properly setting up the two tablets, they are perfectly fine their planned usage (totally locked down, with a only bunch of learning games and access to some specific children video channels accessible for our 4 year olds twins).

And compared to something like a Galaxy Tab (which wouldn't work any better for this scenario either, probably worse if it's harder to root and get XPosed working thanks to KNOX and stuff) there aren't going to be quiet as many tears if they manage to drop it down the stairs...
[Android Q&A, Help & Troubleshooting] rod_amil:
Update

Guys, I see on YouTube that recovery mode is just install with phone turned off to update with firmware of Voyo site. It will be read scatter, push download, connect USB with phone off and got ya! Anyone???
[Android Q&A, Help & Troubleshooting] lakeconstance78:
Which Youtube Video do you mean?
[Android Q&A, Help & Troubleshooting] rod_amil:
This video. In portuguese.

youtu.be/6KLD_PA4oXM
[Android Q&A, Help & Troubleshooting] 1testi:
I don't speak portuguese at all, but never use "format all" with SPFlashtool. It will kill your NVRAM ( IMEI .....) and you never will repair it again,

even with tools like MAUI.
[Android Q&A, Help & Troubleshooting] rod_amil:
Certainly, but this is the method, phone off...

I couldn't try config the hardware in preload port (com lpt), to access the IMEI on SN writer. This is really difficult. :mad:
[Android Q&A, Help & Troubleshooting] 1testi:
Read again. Not the "method" with SPF is the probelm, but the option "Format all".

You can use "Download" for normal flashing and "Firmware update" if changes on the partition system is needed.

Never "Format all".
[Android Q&A, Help & Troubleshooting] nashjc:
>> Has anybody started tinkering with this new 'phablet'?

>> There seem to be issues with its phone functionality, with the recognition of 64GB memory cards, no root success messages so far, etc.

>> Which rooting method will work and prevent 'bricking' such a device? What else could be flashed or installed on it?

For me, the phone (SIMs) don't get recognized, but a micro SD is working fine (8G) in the slot next to the SIM slots. I suspect the software

is for a different brand of chip holder than is installed. It would be nice to have some more information on this.

I've also not been able to root with Kingroot. Have not tried other methods.

On the other hand, for the money the tablet that remains works well and provides decent functionality. I've managed to use apps like

Termux and JuiceSSH to get to my own servers, though it has taken more work than I'd like. However, I think this is Android (Google!)

being proprietary and controlling, so I can't move files around easily, nor easily discover where they are with tools like "find".

I bought this ph(tablet) to learn about Android, and it has served that purpose inexpensively. I now have it as a lightweight tool for

email and files when travelling.

JN
[Android Q&A, Help & Troubleshooting] DaMeZz:
so i bought another 1 of these tablet looking in security menu it says its encrypted i did factory reset that didnt do anything does anyone know how to decrypt ?
[Android Q&A, Help & Troubleshooting] rod_amil:
I understand, 1testi. Now I'm trying to unbrick the IMEI, cause the SN writer don't find the hardware port, it recognizes and lost in 2 seconds about. Probably there is one way to set the phone on com,lpt port, and not MTP... I don't know yet, maybe some mode on recovery, developer mode... I read about turn on phone with removed battery, but this is non-removal battery smartphone, complicated.

---------- Post added at 09:17 PM ---------- Previous post was at 09:08 PM ----------

Maybe this could help you.

youtu.be/zpYVDJgusLo
[Android Q&A, Help & Troubleshooting] DaMeZz:
thanks heaps it worked
[Android Q&A, Help & Troubleshooting] DaMeZz:
Ok so after weeks of looking through google trying everything I give up I cannot make a backup of the firmware to able to use in sp flash tool. If anyone knows a good tutorial please let me know. Thanks in advance..
[Android Q&A, Help & Troubleshooting] 1testi:
I'm sorry, i also never heard of a method, to use a backup with sp flash.

But, thanks god, mtk devices are almost unbrickable, hehe.

You have a second device or at least access to one, when i remember right?

Then it's easy. Insert a sd card in the working tablet, go to TWRP and make a nandroid backup. Copy it to the sd card with TWRP. Remove the sd card and insert it to the faulty tablet. Start TWRP and restore the

backup. Does it boot now?
[Android Q&A, Help & Troubleshooting] rod_amil:
I read about push the usb cable pressing volume up to set phone in com port (preload driver) to SN writer access. Too use MTK droid tools, but not tested. If anyone could test it...
[Android Q&A, Help & Troubleshooting] DaMeZz:
Yeh I bought a second tablet its the same as the faulty 1. I did a twrp backup when I try to restore the faulty tablet I get the screen glitch and freezes at around 114mb never gets past that. I think the only way it can be repaired is through Sp Flash tool. Tried droid tools and other programs couldn't get it to work..
[Android Q&A, Help & Troubleshooting] 1testi:
Sp Flash tool is working on your pc? It's the best method.

Hmm, no idea why the restore doesn't work. It should.

TWRP version on both tablets are the same? How did you format the sd card and with what file system.
[Android Q&A, Help & Troubleshooting] DaMeZz:
Twrp are the same on both tablets.. Sp flash tool works fine on my computer. Sd card was formatted on the good tablet before I did the backup.. I found tutorials on how to make backup to use on sp flash tool got the program to recognise the tablet then I had to connect the tablet to pc with tablet off which I did but the program didn't recognise the tablet and tablet started to charge. Tried everything to get it working which I couldn't.
[Android Q&A, Help & Troubleshooting] starbright_:
Would like to ask for advice.

I know battery and its state is an issue with this q101. Just after receiving it behaves right, charges to 100% goes slowly downto few %.

Now I could charge to just 75% (in fact, voltage was high, >4.2V so fully charged). And it stays for long time at 1% with 3.6V .

So altogether the Voltage-% conversion doesn't work at all. Is there something I can do to "recalibrate" it?
[Android Q&A, Help & Troubleshooting] DaMeZz:
Have a look here https://4pda.ru/forum/index.php?showtopic=832099 it's towards the last page they talk about the battery not sure if they figured out. It's in Russian the site just use chrome to translate. Hope it helps
[Android Q&A, Help & Troubleshooting] Bib_x:
I bought my voyo with stock 7.0 android installed (api 24). Then i rooted it as described here in the forum.

Can i install xposed without any problem? will this work? How did you install this?
[Android Q&A, Help & Troubleshooting] rauliordache:
Don't you have, guys, some problems with the GPS, in the last time ?

After updating the latest Google Play Services, the SNR (according to GPS Test) is sometimes 10 (for a satellite), after 1 sec, is 40, then again 10-12. Sometimes, it is losing the signal (in Google Maps or Waze). I have tried uninstalling G.P.S. but ... nothing better.

(Android 7.0). It was okay, until march 2018 ....
[Android Q&A, Help & Troubleshooting] starbright_:
Mhh, someone told about simular problems but don't find a solution yet.

My tablet's status:

State of security updates: 5.Nov. 2016 (!!!)

Baseband: 2017/06/29

Kernel: 3.18.35+ 29 Aug. 2017

Build: NRD90M-test keys

version:

alps-mp-n0.mp1-V1.19_joyasz6735.65.5.n

In opposite to the datasheet it is heavier, not 460g but > 500g

Might this be because of a bigger battery than originally?

Does someone with this configuration has ever updated to this version?

http://en.myvoyo.com/xiazai/Win Pad/VOYO_Q101/down/839.html

Does it brings an advantage or is it the same version as shipped?

Can you share your experience?
[Android Q&A, Help & Troubleshooting] DaMeZz:
I updated to that firmware as soon as I got my tablet and it stuffed it up so bought a new 1 because voyo customer service don't answer emails so use at own risk..
[Android Q&A, Help & Troubleshooting] starbright_:
Wow!

What happend finally with your updated (1st) device? Could you recover it? And if so, to delivery state of your second device one or to the release from website?

PS: I run the device until battery is really empty and device isn't starting anymore. Than I plugged charger, boot it and charge.

Now it shows 100% again.

If I remember right, previous time I charged it completly while it has been powered off. Will that make the difference?
[Android Q&A, Help & Troubleshooting] DaMeZz:
I bought the second to try fix the 1st one with no luck. There are 2 different screen with these tablets. Just letting you know my barcode 6924266912577 on both these tablets don't work with the new update..
[Android Q&A, Help & Troubleshooting] 1testi:
As said, no idea about backups and SPF.

The problem with restoring backup with TWRP is either a problem with TWRP, you use same version on both devices which is good, with the screenprotect or password needed thing, or your sd card is

formatted to a non linux/android system, maybe FAT/EXFAT. In this case, the backup is not readable 100%, because some key files can't be read. This would explain, why the restore starts, but stops at 114MB.

I would start trouble shooting with formatting the sd card again with ext4, making a new nandroid backup and try to restore it.
[Android Q&A, Help & Troubleshooting] rauliordache:
Back :)

1. Q101 Framework Android 7.0, from VOYO's website is the real (not fake) Android Nougat.

2. It is flashable very easy with SPFT, but use firmware upgrade mode (do not format all partitions as you will lose NVRAM, you need to restore IMEIs etc.)

3. I never use TWRP. Because, after installing the drivers associated with Mediatek, you can connect to PC via SPFT, even if the tablet is off.

===

4. About battery problem, after reading tons of pages + talking with a friend on 4pda forum, I can say that there are several symptoms:

- For example, I have the "huge drain" from 40% to 1%, with an unlinear discharge (5h50min from 100-40%, linear, and than 40-15-1% in 10min)

- Some people said they had an accelerated drain from 100% to 1%, and than another hour (or two hours) at "1%".

All problems are related to power_profile.xml (the file that should be provided by the firm: VOYO, Samsung, Huawei, etc., about the average drain of each hardware after various tests: GPS, Wi-FI, BT, Screen, etc.)

Unfortunately, VOYO did not provide a good power_profile.xml. They hadn't modified the template (default file) provided as an example by Android! They simply copied the template from Android Developer Website ....

The solution: "playing" with this file (/system/framework-res/xml/power_profile.xml). Trying values from a known firm (Huawei, etc.) with same hardware (MTK 6753), who had provided a good power_profile.xml for their devices.

I am not at my PC, I have some files (thanks to Tehnik-4pda). But you need to root the device (7.0 harder, 6.0/5.1. easier).

I will post them, soon.
[Android Q&A, Help & Troubleshooting] Bib_x:
Can you say something about xposed frymework on android 7.0 too? Is it working?
[Android Q&A, Help & Troubleshooting] starbright_:
Can you share the screenshot from the about tablet page in setting? Date and version of firmware ....
[Android Q&A, Help & Troubleshooting] rauliordache:
Sure
[Android Q&A, Help & Troubleshooting] starbright_:
I am using the tablet for reading, especially at night. So I dimmed it to minimum.

I observe that after a while (maybe short before screen goes off) the screen gets a step darker.

Can I extend screen brightness settings, maybe manipulate some internal settings of the backlight?

I just found a few apps, but they don't really dimm the backlight, but do some greyfiltering. This is not the same, as power consumption is not reduced and contrast becomes lower.

Edit: Found something :) :

https://android.gadgethacks.com/how...nimum-brightness-save-your-eyes-dark-0177353/

---------- Post added at 11:51 AM ---------- Previous post was at 11:49 AM ----------

Ok, see - that seems to be identical to the version that is shipped (in my case)
[Android Q&A, Help & Troubleshooting] nixonie:
Hi all,

i have this device with android 6, whats the easiest way to install android 7?

I've downloaded this to my PC but have no idea what to do with it :(

en.myvoyo.com/xiazai/Win%20Pad/VOYO_Q101/down/

Thanks in advance for any suggestions.
[Android Q&A, Help & Troubleshooting] 1testi:
So you have the ROM, drivers and the tool already. You can read here

http://mastazone.de/jiayus3-mados-flashmanual/

what to do with it. It's only an example and for a different phone, but the steps are all the same for any MTK device.

Make sure you read all very carefully before starting.
[Android Q&A, Help & Troubleshooting] starbright_:
What problem you want to solve with this?

I don't know it, but it should work. Imho it took a very long time until it was ready for Android 7.0, but it is ready now.

I did it just once at an older Moto device.

With removing the Screenshot button (see one of my older post) and extending the dimming range for the backlight my problems are solved (except this battery issue from time to time).

I still have an antireflextion foil for the screen, but til now I am afraid to apply it (afraid of getting dust unter it). Any tips how to avoid that?
[Android Q&A, Help & Troubleshooting] Bib_x:
Finally i got xposed working without any problems. Installing with TWRP.

I removed the navigation bar screenshot button with a xposed module. And i did some other tweaks.

(gravitybox, minminguard and others)

Another problem of the tablet is, that there is no mAh measurement of the battery. So all battery-apps will not be able to measure something usefull. Only voltage and % is available, but no mAh.

The problem with the not very accurate clock i solved with an app from playstore, which makes a sync with a time-server every few hours.
[Android Q&A, Help & Troubleshooting] starbright_:
For those who wants to get rid of the Camera button in Navigation bar but afraid of the effort of XPosed:

There is an app in play store: "Custom Navigation Bar".

I was not really happy with the launcher. Can't change background, can set homescreen and worst - from time to time icons disappear from the screens when changing screen or orientation, mainly to portrain mode (which I use for reading).

I replaced it with Novalauncher.
[Android Q&A, Help & Troubleshooting] santamanga:
Did you use gravitybox to hide that annoying button?
[Android Q&A, Help & Troubleshooting] Bib_x:
No, a module called "Android NavBar Buttons".
[Android Q&A, Help & Troubleshooting] martinza:
I can check your contributions. I have 4 tablets of this model. One of them only charges up to 73%. The other three, charge up to 100%, discharge linearly and at X% level, and then it suddenly drops.
[Android Q&A, Help & Troubleshooting] saif alsofi:
i need rom for allozi tab
[Android Q&A, Help & Troubleshooting] starbright_:
Back to one of the most annoying topics: Battery

I am using it just for reading, with dimmed backlight.

Devices switches off at 0% (sounds normal) - but - voltage is still 3.5V. I think power off state should be around 2.9V, isn't it?

My theory is:

I guess it is somehow (mis)calculating the used power and than, when it might think battery power is burned, it switches of, despite on the voltage level of battery.

I think we do have 2 kind of problems with same reason:

a)

Some people have drops downs, as the power drains faster than it is expected by the power_profile.xml. This is not nice, but as a workaround they can have a look at the voltage level. BTW: At which voltage level device shuts down?

b)

Some uses operations with draw less power than described in power_profile.xml. This is even worse, as shutdown not only depends on the voltage. Power in % goes down til 0% and than it shuts off.

Does someone have a better fitting power_profile.xml and knows how to change it in device?

For those with b), maybe the assumption to have a bigger battery can help. Where is this information located in the device?
[Android Q&A, Help & Troubleshooting] martinza:
I found it here -> /system/framework/framework-res.apk

I unpacked it, and I found -> /res/xml/power_profile.xml

I modified power_profile.xml , then I re-pack framework-res.apk but this new file doesn't work... I think I'm "repacking" it uncorrectly...
[Android Q&A, Help & Troubleshooting] starbright_:
I have a few strange issues with that:

I found this framework-res.apk too, copied it to sd-card. For some strange reason, this file was not shown if I connected the tablet with the PC, although it has no special permissions !??

Finally I could copy it via adb pull to the PC and unzipped it.

Don't know what I did wrong, but the power_profile.xml hasn't been a readable xml file, but looks very binary ?!?

Not sure whether you have to take care for any checksums, signings ... while repacking. But I am really a greenhorn with this.
[Android Q&A, Help & Troubleshooting] martinza:
I had the same problem.

---------- Post added at 07:11 PM ---------- Previous post was at 07:06 PM ----------

I flashed Teclast 98 firmware (15-03-2018) but Voyo Q101 didn't start so I returned to the original firmware (7.0).
[Android Q&A, Help & Troubleshooting] rauliordache:
Have you ever tried to flash VOYO I8 MAX firmware (Android 7.1) to a VOYO Q101?

http://en.myvoyo.com/xiazai/V%5Ftablets%5Fseries/i8%5FMax/down/

[MENTION=8231436]martinza[/MENTION] , you stated in your footer that you have VOYO Q101 - Android 7.1. There is no official Android 7.1 for Q101, that's why I am asking if you flashed I8 MAX firmware.
[Android Q&A, Help & Troubleshooting] starbright_:
If I look at the files for the I8 Max it has a different processor (MT6797_Android_scatter.txt - but Yoyo q101 has MTK6753).

From that point of view I would be not expecting any results.

Do you have an idea why the xml is not ascii but binary and how to change the power profile?

(see posts above).