yashsingh1/xdaforums huggingface dataset:
[Nexus 6 Q&A, Help & Troubleshooting] Strephon Alkhalikoi:
I'm not sure. seSuperuser does have a configuration script that you can set, and I believe it affects SELinux. The Play Store should also have apps that can change SELinux.
[Nexus 6 Q&A, Help & Troubleshooting] rollerce:
I'll invistigate seSuperuser. An app that runs after boot won't work for me, because of the constant app crash dialogues preventing me from actually doing anything.
[Nexus 6 Q&A, Help & Troubleshooting] Strephon Alkhalikoi:
From what I recall the apps in question permanently change SELinux to the desired setting, but I simply don't know as I haven't needed to use one.

Checking out what you linked to, you should be able to automate that by modifying one of the boot scripts in /system/etc so it runs on every boot.
[Nexus 6 Q&A, Help & Troubleshooting] rollerce:
Well, dissapointingly, I've fixed the issue by restoring backups using titanium backup instead of rom toolbox. I'll have to communicate with the developer of rom toolbox about the shortcoming.
[Samsung Galaxy Tab A series Questions & Answers] ahunter:
I am trying to root my Samsung Galaxy Tab A SM T550, android 6.0.1 and having a problem. The root seems to work fine but upon re-boot I am stuck at the first Samsung Logo. I can’t do anything from there accept go into downloading mode and flash stock recovery and then the tablet works again but isn’t rooted.

I am using this root method; http://www.howtorootphone.com/2016/09/Root-galaxy-Tab-A-9.7-on-6.0.1.html

How to root Galaxy Tab A 9.7

1.	Install the USB driver for your tablet into your computer.

2.	Enable USB Debugging on your tablet by going to Settings>>Developer options and tick USB Debugging.If your tablet misses Developer options the go to About and tap on Build number 7 times.

3.	Power off your tablet and boot into download mode by pressing and holding Volume down, Home and Power button together.

4.	Connect your Galaxy Tab A 9.7 to your computer using a data cable.

5.	Unzip Odin3 zip file and open Odin3.exe.

6.	Make sure that only "Auto Reboot" and "F.Reset Time" is selected in the options menu of Odin.

7.	Unzip CF-Auto-Root file and get the root file for your tablet.

8.	Click on AP button and select the root file.

9.	Click on Start button to begin the rooting process.

Any ideas about what went wrong? Help!!!
[Samsung Galaxy Tab A series Questions & Answers] ahunter:
Sorry, tried to delete but didn't see how. I think I'll find my answer here; http://xdaforums.com/galaxy-tab-a/development/root-samsung-galaxy-tab-9-7-sm-t550-t3126827
[Samsung Galaxy Tab A series Questions & Answers] Terbs:
hey i've got the same problem with the same tablet! Did you solve it?
[Samsung Galaxy Tab A series Questions & Answers] shivam s:
https://xdaforums.com/galaxy-tab/development/guide-twrp-r-t3390115

I did this and this worked for me the same...

But in the last , the reboot screen is there and phone isn't starting . Please help as fast as you can .
[Samsung Galaxy Tab A series Questions & Answers] OfficialPyroh:
Root with super su, go to supersu.com then download the recovery flashable one. If you can't boot to your tablet restore a backup or flash stock rom, hope this helps!
[Xiaomi Redmi Note 3 Questions & Answers] Soulreaver1993:
Hi,

i want back ti MIUI global DEV. I´m on CM13 official unlocked Bootloader.

I try every TWRP Mod, Lazyflasher and flashing via EDL, nothing works!

I have no idea why, have someone an idea?
[Shield Tablet Q&A, Help & Troubleshooting] GuyInDogSuit:
Power button is busted, stuck in bootloader, "waiting for device" no matter what I do

So my power button refuses to work now, though NVIDIA opened an RMA. Problem is, now I can't restore the stock ROM because the power button is busted and I'm stuck in bootloader and the ****ing Command prompt keeps saying "waiting for device" no matter what I do.
[Shield Tablet Q&A, Help & Troubleshooting] lafester:
What have you tried? It's either a driver or cable problem.
[Shield Tablet Q&A, Help & Troubleshooting] GuyInDogSuit:
Don't know for sure. Tried restarting the PC, different ports... then I ran the "flash-all.bat" file out of desperation and it actually began the sequence. Once it was done, I ran the "fastboot reboot" command and it restarted.
[Desire 626 Q&A, Help & Troubleshooting] ridhaumri:
Hi everybody! I have a problem, my 626 Sprint just get 2G signal only,even though i already chosen 3G only in Network mode,

anybody help me to know what to do? thanks before
[Desire 626 Q&A, Help & Troubleshooting] doyin116:
Same problem. Help pls

I'm having this same issue as I'm stuck on 2G while d device has 4G. Tried unlocking the bands through qpst and dfs CDMA tool, yet no success. From what I've read, we may b able to add bands with a custom kernel which I'm not sure has been created for this device.
[Desire 626 Q&A, Help & Troubleshooting] Jakecdma:
Unactivated

I'm trying to activate my service with a CDMA carrier that is called choice wireless I haven't active the phone yet unsure if it will cause a problem no bars. Just locks the 4g LTE gsm. The carrier don't use Sims and I haven't yet to call them. Plz help
[Tilt, TyTN II, MDA Vario III Accessories] gogol:
Hi,

Anyone has this?

http://www.keomo.com/prod_id3_charge_chargebank.htm

If yes, how good is it? :)
[Tilt, TyTN II, MDA Vario III Accessories] rsolomon:
I can't comment on that one - I have a similar product from APC though and am very happy with it:

http://www.apc.com/resource/include/techspec_index.cfm?base_sku=UPB10

Richard
[Tilt, TyTN II, MDA Vario III Accessories] gogol:
Interesting, but how much is the capacity in mAh? :)

I saw only 10 Watt hours ...

PS: I ordered Keomo anyway.
[Tilt, TyTN II, MDA Vario III Accessories] rsolomon:
Please do let us know (here) what you think! How does it charge? (The APC charges via a miniUSB port and outputs via a USB port - so you can use the same wall charger for it as for your miniUSB device.) How much did it cost?

I'm not 100% sure about the APC capacity - at 5V, 10WH is 2000mAh. (Watt hours is just Volts * Amp Hours). If you figure 3.7V lithium cell voltage it might be more like a 2700mAh battery....but since anything with a USB connector has to put out 5V I think 2000mAh is the right number to use - and hope APC rates the capacity at that connector.

The Keomo said it had a 2200mAh battery, so that's only ~8.1 WH. Even assuming 100% efficiency in the 5V upconverter you're at most looking at ~1600 mAh at the USB port. So I suspect the APC has a bit more capacity, though it's definitely larger. The flatness actually makes the size pretty manageable in my experience, but even smaller would of course be even better :)

Richard
[Tilt, TyTN II, MDA Vario III Accessories] gogol:
I have not received it yet, hopefully this weekend or next Monday.

The device cost me 35 euro :)

I like the small factor of Keomo, but honestly, I did not find APC when I was searching this kind of battery. I could choose APC if it has more capacity btw.
[Tilt, TyTN II, MDA Vario III Accessories] Eurybia:
For the same price I ordered this one (sorry, german website ;)):

http://www.hot-wire-telekom.de/index.php?aktion=detail&suche=HTC Kaiser&asuche=HW133335#bilder

A foldable solar panel with a set of different adapters.
[Tilt, TyTN II, MDA Vario III Accessories] rsolomon:
Interesting idea - what's the current rating?

I'd be completely shocked (pun intended) if it can even charge a Kaiser battery - I think you'd need a much larger panel to put out even close to the 500mA of a spec USB port....

Regardless it wouldn't work too well for me, since I usually end up using my extended battery on an airplane :D

Richard
[Tilt, TyTN II, MDA Vario III Accessories] rsolomon:
Oh wait, I see - it's a battery with integrated solar recharger. Note that it's only 1200mAh or about 4.4WH so half or less the capacities we've been discussing. Having a battery, I at least believe it will work - but you won't have a lot of extra capacity, and I'm curious how many hours of sunshine it needs to recharge fully. Is it possible to charge some other way than the solar panels?

Richard
[Tilt, TyTN II, MDA Vario III Accessories] gogol:
I am still charging the Keomo :)

The input is 500 mAh via "mini-USB".

The output is 1000 mAh via "USB-A"

Anyone know how to calculate how long to charge 2200 mAh battery using mini-usb? :)
[Tilt, TyTN II, MDA Vario III Accessories] rsolomon:
mAh is a capacity measurement, not a current measurement.... I assume you mean 500mA and 1000mA. It's just math: 2200mAh / 500mA = 4.4hrs.

Richard
[Tilt, TyTN II, MDA Vario III Accessories] gogol:
Bad performance

Here is my test and review of Keomo Charger.

My Kaiser was at 48% of battery, and the Keomo was at 100% (I charged more than 15 hours!).

Keomo has 3 indicator lights.

I started charging at 19:02 ...

My Kaiser was at 58% then 1 Keomo light went off ...

My Kaiser was at 75% then another 1 Keomo light went off ...

My Kaiser was at 96% then the last Keomo light went off ... !

The Keomo was dead ....... at 22:15

Total charging time = 3 hours and 13 minutes.

So, conclusion: 100% Keomo battery = +48% Kaiser capacity

Really disappointed to be honest :(

The Keomo was advertised that it has 2200 mAh capacity. Well, I know nothing about this mAh , battery technology, etc. I thought, Kaiser has 1300 mAh, so this Keomo should be able to charge 100% of Kaiser battery. I was wrong.

Richard, how is your APC perform???

Have you measured 100% APC battery = ???% Kaiser?
[Tilt, TyTN II, MDA Vario III Accessories] victoradjei:
You are not far from right :)

You are very accurate in this conclusion :mad: I bought one last weekend, but so far I have used it only twice with similar results! I resisted the urge to post, because there is always a statement about Li ion batteries that they should be cycled through charge-discharge a few times before they attain their full capacity from new. So I hope a few more percentage points will be gained with use :rolleyes:

Conclusion: Don't buy it.
[Tilt, TyTN II, MDA Vario III Accessories] rsolomon:
The only flaw I see in your methodology is that having the Kaiser on draws even more current, so you further increase the power "lost" to running the Kaiser vs charging the battery. You should get slightly better results by leaving the Kaiser in standby ("off") and timing until the light goes green. I doubt you're off by THAT much though :(

Another issue may be the Keomo not putting out enough current - thus the Kaiser sort of loses ground, in other words it's discharging almost as much in X period of time as it's charging due to the slow charge rate. The APC claims to put out 1.6A so the Kaiser should charge at full rate.

I had a Hermes for a year or so and used the APC a bunch back then - my rough estimate was 3-4 "charges" from the Hermes at ~40-50% up to 100%. I've not done any calculation with the Kaiser - I will do that and see what I get. It's tougher now because I'm running DirectPush for work and may have a hard time finding time to let the Kaiser run down *and* turn off DirectPush to keep it from sucking up all the power.

I did use up all the APC power on a 9 hour flight from Europe to the USA where I watched 3 hours of video on the plane (full screen MP4 in Windows Media Play) and read a couple of ebooks....but that doesn't tell us much objectively :(

Richard
[Tilt, TyTN II, MDA Vario III Accessories] rsolomon:
FWIW: I hear this a lot online, but my personal experience has never borne it out - and I've never heard it from any of my contacts in the electronics industry.

Richard
[Tilt, TyTN II, MDA Vario III Accessories] gogol:
You are right that it could charge much more when the Kaiser is in stand by, but that is not the way I want. I want to use the portable battery to "continue" to use Kaiser when it runs out of power.

Based on your story, it looks APC is so much better. You said 3 times or 4 times charging Hermes for additional 50% ... Thats a lot.

Well, I just ordered APC :)

PS: You may use your mobile phone in a flight? I remembered once I said to the flight attendant that I set to "flight mode", but she still asked me to turn it off :(
[Tilt, TyTN II, MDA Vario III Accessories] victoradjei:
I always do! Turn off all wireless and use the pda. Only barred for take-off and landing. Going to use it on flight in 3 days, but Keomo can't cross the Sahara alive!
[Tilt, TyTN II, MDA Vario III Accessories] rsolomon:
Oh I see. For that mode of operation it's probably psychological, but I think it works best to start with the device fully charged, then let it run off the external battery until that is dead. Doesn't seem like the ultimate runtime should be different, but I think I'm more comfortable knowing there's only X hrs left in my flight and I now have a dead external battery and a full internal battery.

I hadn't read your desired usage model first, but I did a test similar to yours this morning. I ran the Kaiser down to 47% and then connected it to my APC battery and put the Kaiser back in standby. (The APC was fully charged a few weeks ago, but unused since then - so figure 95-100% charged.)

09:23 47% 4 lights

10:23 73% 3 lights

11:23 83% 3 lights

12:22 100% 2 lights

The unit obviously finished charging sometime between 11:23 and 12:22 because the APC had auto-shutoff already. I'm confused by the 11:23 datapoint as I'd think the Kaiser wouldn't go to low-current charge mode that early in the battey's life, but maybe it does at 80% vs the typical 90%?

My guess is the APC had just dropped below the 3 lights threshold, but I wasn't around to see it. (You have to push the button on the APC to turn on the power display.) Per APC the light to capacity mapping is:

4: 85-100%

3: 55-85%

2: 25-55%

1: <25%

You could pretty safely get 2 of these ~50% up to 100% recharges then - and probably more in flight mode, since I was running DirectPush on a 3G network the whole time (though no e-mails came in during the test).

Richard
[Tilt, TyTN II, MDA Vario III Accessories] rsolomon:
Yes, ditto to what victoradjei said - I turn it off during takeoff and landing but on during normal flight. I've never had a problem with the flight attendents, but that's one more thing I like about PhoneAlarm - having the big airplane icon right on screen in case of questions :)

In fact the crew on my Germany to USA flight were quite entranced by the sight of my Tilt playing video, running off my APC battery and into my noise cancelling headphones :D They were only sad that the Tilt wasn't a "freebie" phone from AT&T - or I probably could have sold 3 lines of service right then and there ;).

Richard
[Tilt, TyTN II, MDA Vario III Accessories] gogol:
Hi Richard,

Your test result is pretty amazing, definetely APC is way much better than Keomo. Probably the best in this area, in terms of size and power. For sure there are other portable battery which are more powerful but very big in size + ugly.

You could charged your Kaiser from 47% to 100% and still have 2 lights on in the APC (down from 4 lights).

I ordered APC last night, hopefully I got it asap because my long trip will be next week.

And I forgot that I still dont have bluetooth speaker phone ! Silly me ... How can I watch movie silently while charging the Kaiser without BT speaker phone :P
[Tilt, TyTN II, MDA Vario III Accessories] rsolomon:
I should have mentioned that I use one of these:

http://www.semsons.com/2miusband3st.html

to achieve that. I've seen a number of similar products - and actually Semsons seems to be selling a different one than I bought from them, mine has the miniUSB connector coming out the back vs out the side like that. You should be able to find any number of headphone + miniUSB adapters for HTC phones that will allow charging plus headphones.

(You're not supposed to use BT or any other RF wireless on the plane of course.)

Richard
[Tilt, TyTN II, MDA Vario III Accessories] Eurybia:
I didn't buy this gagget to fully charge the Kaiser battery but to lengthen its usage in case battery's low and you don't have another charger available. When UPS delivered it I checked it out with my Nokia 6131 inside the office under standard office lighting - no direct sunlight - and it was charging.

There are a lot bigger panels available of course which would fully charge the Kaiser, but when would you need those solar panels anyway? On a backpacking trip you could only use it during the day when you walk thru the woods and you wouldn't carry much bigger panels around during that time anyway.

With some additional battery you had in mind you are limited to its capacity...so what would you do if your Kaisers battery and the backup unit is empty? ;)

Christian

Christian
[Tilt, TyTN II, MDA Vario III Accessories] rsolomon:
The Nokia was charging or the battery pack was charging? 'cuz the builtin battery was likely delivered partially charged so it should charge your Nokia in the dark :D

Thus my question about charging the pack you bought: can you wall-charge it as well or only solar? How long does it take to charge in the sun? I expect you cannot fully recharge a 1200mAh pack off those solar cells in one full day of direct sunlight....but I'm not a solar cell expert.

I think my answer to that question and your answer to that question are the same - "Look for a wall outlet" :) Luckily I carry a univeral power supply in my laptop bag that will take AC or DC input ;)

Richard
[Tilt, TyTN II, MDA Vario III Accessories] gogol:
Good tips! I ordered that as well :)
[Tilt, TyTN II, MDA Vario III Accessories] rsolomon:
LOL, I'm always happy to spend someone else's money ;)

Richard
[Tilt, TyTN II, MDA Vario III Accessories] gogol:
hahahaha ... yeah :) But honestly, that device is very useful and I dont have any other choice to charge while playing / using it :)

Btw, here is another Keomo test which is interesting:

- Kaiser was at 30%

- Keomo was at 100-% (it was fully charged 1 day before)

I attached Keomo to Kaiser and then turn the Kaiser off, put it in standby.

The Kaiser went to 100% and 1 Keomo light went off !

So, The Kaiser gained +70% for only 1 Keomo light. .... nice.

This is good, but for me not practical because I want to charge while using the Kaiser.
[Tilt, TyTN II, MDA Vario III Accessories] gogol:
I got my APC now, but from the manual, it said that I need to have 2 kind of USB cables!

USB-B for charging the APC.

USB-A for charging the device.

I only use 1 USB cable for the Keomo, well it could be that I use USB-A for both charging the Keomo and powering the device (I cant see the type from this USB cable).

Anyway, I use "that USB cable" to charge the APC at this moment and hopefully I can use that same USB cable to power the Kaiser.

Weird ... *confuse*
[Tilt, TyTN II, MDA Vario III Accessories] rsolomon:
You can use the same cable, it's just that the miniUSB jack is an INPUT and the "normal" USB jack is the OUTPUT. So plugging a cable attached to the mini jack into your computer or a wall charger will charge the battery, plugging a cable attached to the normal USB jack will charge the device you attach. I carry the battery and a USB to miniUSB cable. I use it one direction for running the Kaiser and turned around to charge the battery from my laptop.

Note that the 850mA Motorola charger I carry would NOT charge the APC when it was fully discharged, but my laptop would - so you probably need a 1A power supply (1000mA) like the one they provide....

Richard
[Tilt, TyTN II, MDA Vario III Accessories] gogol:
Richard,

I am confused with your equation below :)

Why do you rate the Keomo has ~8.1 WH capacity?

As you said: WH = AH * V

2200 mAH = 2.2 AH

Keomo WH = 2.2 AH * 5V

Keomo WH = 11 AH (capacity)

Correct?

If this is correct, the Keomo (11 WH) has more capacity than APC (10 WH).
[Tilt, TyTN II, MDA Vario III Accessories] rsolomon:
Because there's no such thing as a 5V LiION battery - they're 3.7V, and Keomo says it's a 2200mAh battery.

Richard
[Tilt, TyTN II, MDA Vario III Accessories] gogol:
Ok, here is the result of my APC Mobile Power Pack test :)

Kaiser start at 25% and the APC is fully charged.

I turned ON the Kaiser while charging it with the APC.

- Kaiser 25%, APC 100%, time = 18:50

- Kaiser 73%, time = 21:35 (elapsed time = 2 hours 45 minutes)

From here, the APC is much faster compared to Keomo for 48% gain (Keomo = 3 hours and 13 minutes).

- Kaiser 92%, APC = 0%, time = 22:44

Total time = 3 hour 54 minutes for additional 67% :)

So, APC is much faster and have more capacity (+48% vs +67% additional power to the Kaiser, for 100% portable battery power).

However, the APC is much bigger in size (but thinner) and more expensive compared to Keomo.
[Tilt, TyTN II, MDA Vario III Accessories] gogol:
DO NOT BUY THIS :

You cannot charge while using the PDA, the charging is not strong enough.

In standy mode, it needs more than 30 minutes to add 2%.

I think I had enough with all this portable battery :)

APC is the winner !
[Tilt, TyTN II, MDA Vario III Accessories] rsolomon:
I've never tried those with a Lithium battery - though that defeats most of the point of such a beast, IMO. I have tried several of these single-AA battery chargers and none has worked (with Alkalines) with a PDA phone for me.

I tried APC's little 4x AAA pack with similarly poor results.

Boxwave sells a 4x AA pack which *might* work, but I've not tried it to see. Most of those recommend Lithium batteries for high-current applications, so I expect they won't work well with alkalines :(

Richard
[Tilt, TyTN II, MDA Vario III Accessories] Jim_R:
Too bad they haven't made a usb tip for the SideWinder.

http://www.istdesigns.com/store/product_info.php?cPath=1&products_id=1
[Tilt, TyTN II, MDA Vario III Accessories] rsolomon:
Ummm, there's one listed right on the page you linked. I doubt that device can churn out anywhere near enough current though....

Richard
[Tilt, TyTN II, MDA Vario III Accessories] 3waygeek:
I just got the PocketPCTechs version & am using it with 2700 mAh rechargable NiMH batteries -- it doesn't seem to have enough power to charge the battery when the Tytn II is turned on, as the Windows battery meter has gone down a couple of percent since I hooked up the battery pack.

I've just turned off the Tytn II -- in an hour or two, I should be able to see if the battery has charged at all.
[Tilt, TyTN II, MDA Vario III Accessories] rsolomon:
Wow, that's sad. Unless you're on a call and doing a lot of 3G data (under which conditions I've seen the battery drop even on A/C power!) that's unacceptable - and those NiMHs should have PLENTY of current capacity, so the problem isn't the batteries themselves :(

Richard
[Tilt, TyTN II, MDA Vario III Accessories] 3waygeek:
Actually, the PPCTechs charger may well charge the Tytn II when it's turned on. The PPCTechs charger has a switchable voltage limiter so that if you use lithium or alkaline batts, you don't fry the device you're charging. I had that switch on; turning the switch off sped up charging considerably when the Tytn II was powered off.

Now that I know about the switch, I suspect that the charger will charge the Tytn II while turned on -- I'll try it again next time my Tytn II runs down.
[Tilt, TyTN II, MDA Vario III Accessories] rsolomon:
Hmmm, I'm not sure that makes me any less scared! Surely they have a voltage regulator in there, not just connecting 4x batteries in series! Disposable batteries start out around 1.6V so that'd be 6.4V if they just ran it over to the USB connector - and your description of the switch makes it sound like that's exactly what they did!!!! I'd hate to toast my $500+ PDA phone because I forgot to switch the switch!

I just looked at the product page.... personally I'd be EXTREMELY hesitant about buying that, and would NEVER recommend it to anyone else. That design verges on criminal IMO.

Richard

P.S. I looked at the Boxwave product

http://www.boxwave.com/products/batteryadapter/index.htm

and couldn't find any explicit reference to a voltage regulator, but am completely shocked anyone would sell such a product without one!
[Tilt, TyTN II, MDA Vario III Accessories] gogol:
I dont like it either. It is big, much bigger than APC.

For me, at this moment, APC is still the best choice.