Android :: Recover Offline Devices
Dec 23, 2009
I found that android handsets connected to my PC via usb often go 'offline' status (by adb.exe devices). And, in this situation, I can not debug or access the handset anymore. My question is, how can I make the handset back to 'device' status. I tried 'adb kill-server' and 'adb start-server', but it didn't help. Why the connection is so unstable, and how can I recover it without reconnect it to the computer.
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Feb 25, 2013
I updated SDK Tools to 21.1 and Platform-tools to 16.0.1. Verified with 'adb version' that I am running v1.0.31. Windows 7, x64.
I have four 4.2.2 devices to test with, a Galaxy Nexus with unlocked bootloader but not rooted, and Nexuses One, 4, 7 & 10, all stock.
The Nexus One, being <4.2.2, works just fine with adb, but all the 4.2.2 devices show as 'offline' in adb, and I have NEVER seen the RSA security dialog pop up on the devices, even after several restarts of ADB (using kill-server), the PC and the devices themselves.
Have tried using different USB ports and cables. I'm using the standard 'Android ADB Interface' drivers from the SDK, but have also tried the 'Android Composite ADB Interface' and 'Samsung Composite ADB Interface' drivers too. I even completely re-installed the SDK from the ADT bundle.
Weird thing is, my colleague can get the popup to show on those same devices without any trouble. I even copied his adb.exe and dll's and tried that and it still wouldn't work on mine. He didn't install from the bundle; he installed ADT into Eclipse, the old-fashioned way, but I doubt that would make a difference.
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Mar 28, 2013
My phone is LG Prada P940. The problem is when I connect the phone to usb debug mode, status bar show slow charging, usb debug start completely.
But, when I try to root it in cmd, it sticks at daemon running. When I try "adb devices" command, it says "xxxxxxxxxxxxxxxxxxxxxxx offline".
Now I can't root my phone.
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Oct 21, 2012
Recently i received a unbranded 7" tablet with ICS firmware which was locked permanently because of too many wrong attempts to unlock device. I used adb to break the lock and successfully booted it again for regular use.
First you require the following things:
1. usb debugging active on your device(if debugging is not on then you cannot use this method)
2. adb shell on your computer (follow this thread for adb [URL] .....)
3. usb cable to connect your device to your pc or laptop.
4. Usb debugging drivers if not installed from here [URL] .....
How to unlock:
1. connect your device to pc and install drivers.
2. open the folder where you installed the adb for dummies and search for adb.exe
3. right click holding shift on the free space in folder containing adb.exe and select open command window here.
4. typre following commands separately by pressing enter after each line:
adb shell
cd /data
rm -r data
reboot
Your device will reboot and you will not have any password to enter and a free unlocked device again.
NOTE- this will not work on all devices but it will work on unbranded , chinese and local tablets . i confirmed this method on CHAMPION WTAB 7.2 AND KROSS tablet ics. Be careful not to delete the /data folder, you have to delete data folder under data folder(/data/data). so just enter the commands as they appear and it will be fine.
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May 14, 2014
How To Transfer TEXT MESSAGES from WP8.1 devices to Android Devices ??And also the contacts!!
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Oct 2, 2013
Can I have two separate google play accounts for two different devices & keep one gmail account for both devices?
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Nov 1, 2009
I am developing my am on mac (10.5.8), on eclipse and SDK 1.6 and a Vodafone HTC Magic Everything was working ok up to a few days ago. I can not see my device on adb devices. I also got a Sony Xperia and I can not see it on the list either. I upgraded the phone software (the HTC) to 1.6 a few days ago. Maybe that is what caused the change, but I could not be sure.
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Jul 13, 2009
I'm a UK based Android newbie (maybe)Can I download maps and use GPS offfline to avoid expensive roaming charges in Europe?
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Mar 20, 2010
When I bought my Nexus One, I took the card out of my G1 and put it in my N1. I've developed an app and I know how it works on the Nexus but I want to test it on my G1. I wanted to see how my app looks on a G1 so I connected it to my computer and put my .apk file into the downloads folder on my G1's SD- Card. Ok, now my app is on my OFFLINE G1 but how do I install it? Can I install it with only the native apps on my G1? Right now, I don't see anyway to view the file. I know I can take the chip out of my N1 and put it back into my G1 and then simply download and install it but I would rather not do that.
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Mar 7, 2010
I use Newsrob, and curious as to what seems to be the most popular way to download RSS feeds for offline use? Do you download Articles / Articles + Images / Articles + Images + Mobile Web Page / Articles + Images + Web Pages?
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Nov 30, 2009
I am developing an application with TripIt integration and I make a call to their API and I get all my data in JSON format and save it in an object ListTripResponse. This object contains all the data I need over all the application. What I do now, I write this object to a text file (i serialize my object and save it as a file with ObjectOutputStream) and in every activity I read this file. But this file is pretty long and it takes a while to read it. And i have to use and read this object in every activity! Isn't there a better way to do this? I cannot save this file in a database because the structure is to complex.
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Jun 24, 2010
I'm somewhat unfamiliar with the droid incredible's GPS features. I know it uses A-GPS, but I've been led to believe that the use of cell towers is only to facilitate the acquisition of the almanac or when GPS signal is unavaible altogether. I'd like to use my phone's GPS while camping, at which point I'll be well away from cell coverage. Will I still be able to get a GPS signal. If so can anyone reccomend a topographic mapping software that I can download maps from to my phone?
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Aug 19, 2010
Google Translate is great, but it's crippling fault is that it needs a data connection to work. Obviously the only time I am going to need language translation tools, is the same time I don't want to pay for roaming data access!!
Are there any good (and preferably free, or minimal cost) language apps for Android that work offline? I need English > Italian initially, but the major languages would need to be supported too.
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Mar 13, 2010
I am making for my Graduation Project a low price Navigation device, using Android as Operating System.I tried the Native Google's Map-view Control, but it works only Online ..
and of-course I want to store maps for offline navigation.The problem with OpenStreetMap that it doesn't provide detailed map for most cities in Egypt.
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Aug 22, 2013
ADB see my device as offline on PC.My configuration:
PC - Win7 (32), ADB v.1.0.31
Device - Android 4.0.3, ADB v.1.0.29
I don't know what happened but one morning couldn't connect to my device.
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May 16, 2010
I have a new HTC Hero and TELUS imported the contacts from my old (OLD) Motorola i570 dumbphone. I need to do a lot of cleanup of the data, including specifying proper first/last names, merging postal and e-mail address data from my Palm TX's database, etc. I used "Contacts Manager" to export my phone-based contacts to an XML file on the SD card. It can apparently import an XML file as well, but I can't get it to work. It always complains about importing a directory instead of a file.
Contacts Manager v1.1 Application for Android | Tools
So now I'm looking for another app that can overwrite my phone's contacts database with new data from an XML or CSV file. I would really prefer not to send all this information up to Google.
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Nov 2, 2009
I created a chess game for Android - Chess Walk, it's on Market for free under title "Chess Walk (BETA)". It has online mode (you can play on Free Internet Chess Server) and offline mode. The built-in chess engine is not very good, I'll probably focus now on improving its strength and style of play.
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Sep 1, 2010
I am looking for a mapping application that will let me browse maps offline, as well as plot points onto the map. Does anyone have any ideas which app might let me do that? According to the MapDroyd app, it won't let me plot points
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Jun 8, 2010
In my application I use SoftReference to cache images, it is working fine with active internet connection. And now I need to cache images, so I could use it in offline mode. What is the best way to implement it? Use complex solution with SoftReference and database? or maybe SoftReference and local storage (sdcard)?
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Nov 24, 2008
I don't currently have a data plan. Since I'm on WiFi 95% of the time, I don't plan on getting one. The only thing I haven't been able to do easily (without a data plan) is use Google Maps while driving/walking.If I load the maps before leaving a WiFi hotspot, my location is tracked and I can pan around the map. Of course, as soon as I want to view another uncached portion of the map, I can't.Maps are small, and it would be perfect if I could cache maps for a certain area - say everything within 100 mi of my house. Any ideas?
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Jul 27, 2010
I have downloaded andnav2 and I downloaded the ready-made mapnik map tile packs for Greece via the computer. I have put the map tile packs in the correct folder: /sdcard/andnav2/tiles/mapnik.But when I opened andnav2 in Greece, I cannot see the downloaded maps.Why am I not able to see offline maps?What do I need to do now? Can anyone help please?
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Jan 14, 2010
I am an avid outdoorsmen and I have downloaded a few different gps apps to my droid. Like My Tracks, Oruxmaps, Trekbuddy, Geobeagle, and so on. I cannot figure out for the life of me how to download an offline map to put on these apps so that I may use the gps feature when I have no signal. Can someone please help me out with all of this? I'm about to go crazy here.
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Oct 11, 2010
Are there any good free offline maps apps for Europe including navigation features?
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Oct 11, 2010
I am a newbie to Android operating systems, I own a Samsung Galaxy-S (i9000) and am from India. Its widely known as Samsung Vibrand, abroad.Is there any offline maps for "India" available for this mobile?The mobile has GPS device inbuilt in it.
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Jul 21, 2010
I am looking for an offline GPS program.
But I would like to try it before purchasing it as these programs are quite expensive...
Does anyone know about one (or several!) GPS program that allow the user to try it for some time before purchasing it?
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May 22, 2012
how it is possible to make offline map application in Android using eclipse or any IDE.
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Jul 13, 2012
I am working on Eclipse and am looking for method to down load Android API's offline and then plug it to Eclipse
is there a method for that ? because my internet Connection drive me crazy.
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Apr 22, 2014
Is there any apps or anything to be online on facebook messenger and appear offline to others?
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Mar 16, 2012
I am looking for an offline synchronizing tool/app/client for android devices.It can be used to take backup of
1. Contacts
2.Messages
3.Photos & Videos
4.Calender.
It should be able to backup this data using one or more of these:
1.USB
2.WIFI
3.BLUETOOTH
4.HTTP
Also, I am looking for such a tool specifically for Linux machines.The reason for this is to avoid sending data to the cloud during backup for privacy reasons. Actually I am developing such a cross platform compatible offline synchronizing tool myself. But I want to know if this already exists.
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Jun 6, 2014
I am coming from Windows Phone and everything went smoothly during the transition. However, I miss some useful functionalities I had with WP that I really miss on Android, like offline voice recognition and SMS reading.
I was using voice recognition in my car (where data connection is bad and unstable from which it is necessary to have this functionnality offline), I was saying "call [NAME]" and it triggered the phone call with confirmation of the command.
I would like to do the same thing with my Nexus 5 but I didn't find a way to do it. I downloaded the language pack for my language (French) in the parameters. Is it possible?
Anorther point is the reading of the SMS (texts). When a headset (wire or bluetooth) was connected to my WP, my phone was able to read aloud the content. Is it possible with Android?
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