30
votes
5answers
59k views

How to keep two versions of an app installed?

Android Market has just updated an app in my device. I liked the update, but its fully different from last version which was also my favorite. So, I want to keep last version too. I have last version'...
30
votes
2answers
35k views

What is `Snapshot` and `Use host GPU` emulation option(s) for?

When creating an emulator device, the option Emulation Options makes me confused. What do Snapshot and Use host GPU mean?
30
votes
1answer
117k views

What is the basic functionality behind the Odin buttons & checkboxes?

There's a good question on what the Odin tool is. I understand now that it's an internal Samsung tool for flashing firmware, which explains why it's so hard to find info on the (rather cryptic) ...
30
votes
3answers
26k views

How do I get rid of “Network may be monitored” in KitKat?

Ever since I've installed my own CA in the key store I'm getting warnings that the network may be monitored. Well, I guess that's a valid warning if I don't trust these certificates, but I really ...
30
votes
0answers
2k views

What are the drawbacks of moving an app to SD card? [duplicate]

Since I upgraded to Android 2.2, I noted some minor disadvantages of moving an app to SD card, like having to wait the SD card to be mounted after a reboot to be able launch the app. What other ...
29
votes
6answers
310k views

How to change my device location on the Play Store

I'm trying to download an App on the Play Store, specifically the Vue Cinema app, but this app is only (presumably) available in the UK. I have just relocated to the UK, so how do I set my location ...
29
votes
1answer
31k views

When will my device get the Android 5.0 update (Lollipop)?

Android 5.0 (Lollipop) was officially announced on October 15th, 2014. You can review the high-level changes at the Android website and the announcement on the official Android blog. Of course, not ...
29
votes
2answers
169k views

Where Android apps store data?

Could you list all possible directories where Android apps may store data, providing description what kind of data are stored in each directory?
29
votes
2answers
26k views

What information does stock Android send to Google by default, and how do I opt-out?

I'm about to buy my first Android phone. My understanding is that, in order to download apps and get updates from Google Play, I need to be permanently signed into a Google account that's linked to my ...
29
votes
12answers
108k views

How do I project the screen of my Android phone for a presentation?

How can I project my Droid Incredible screen so I can demonstrate the smart phone to a room full of people? Does anyone know how I can link the phone to a PC? To a TV?
29
votes
11answers
2k views

Where can I find a comparison of Android devices? [closed]

I recently got fed up with my previous smartphone (name omitted) and I'm considering switching to an Android based phone. However, I have been stumped by the sheer number of handsets. I'm more than ...
29
votes
3answers
372k views

How to change the account for Android Market?

I use two Google accounts and add them to . Let's say acc1 and acc2. When I try to buy an app in the Market, it chooses acc1's Checkout account, and I don't see an option to change to acc2. Can I use ...
29
votes
5answers
42k views

Can I emulate a Bluetooth keyboard with my Android device?

I'd like to use an Android phone for controlling presentations. I know there's some wifi approaches, but often times the computer running the slideshow isn't owned by me and is not comfortable ...
29
votes
5answers
24k views

I want to remotely control my Android device from my PC without rooting it. Is this possible?

Looking for something to remote control my Droid without having to root. To be clear, I am looking for full control over the computer (view on monitor, use mouse and keyboard for input).
29
votes
1answer
10k views

The name “Alicia Han” appears to be calling!

I think there's a bug in Android where some Alicia Han appears to be calling. This happens some times if you hang up on someone calling you, or you have a missed call. The name appears in the instant ...
28
votes
12answers
5k views

What's the most effortless way for “cloud” back up of photos taken with an Android phone?

After I take a picture with my phone, I want it to be synced (and/or shared) to the "cloud" shortly thereafter. (Say after a few seconds when I have wifi connection but not necessarily right away when ...
28
votes
3answers
7k views

What are the security disadvantages of rooting an Android phone?

I know there was a discussion previously BUT they didn't talk about security. E.g.: if I root my phone will all my apps run with root permission? Related: Are there any risks to rooting a device?
28
votes
11answers
138k views

Block apps from accessing the Internet on Android device

In Android, is it possible to block apps from accessing the Internet? Many apps will often connect to remote servers in the background, including Google's own apps or system services. Over time this ...
28
votes
4answers
10k views

Can I use Gmail while offline?

Is it possible to download the new emails from the Gmail account while online, and then read them while offline? Is it possible to write emails while offline that will be sent when online?
28
votes
2answers
60k views

What exactly is superuser.apk and su?

I've done a lot of reading into rooting of Android devices. I really want to know exactly what is going on at each step before I commit to the process. I'm a little confused as to where the ...
28
votes
5answers
48k views

How can I use my Galaxy Nexus as an external USB storage drive?

I just got the Galaxy Nexus and learned that it does not support USB Mass Storage mode. It only supports MTP and PTP. I regularly use my phone as a USB flash drive at work so this is a problem. I ...
28
votes
12answers
63k views

How to edit the “ME” contact?

On my Galaxy Nexus running (stock, non-rooted) ICS, there is a contact entry for "ME". This is different from the contact entry farther down the list with my actual name on it. And the contact for "...
28
votes
3answers
8k views

What is the relation between ROM Manager, ClockworkMod and Nandroid? Which one(s) do I need?

So I understand the first thing I need to do with my phone, after rooting, is to back everything up. But I was confused about 3 of the apparently popular tools used for this. For example, is Nandroid ...
28
votes
1answer
23k views

What's the security implication of having an unlocked boot loader?

Nexus devices can be unlocked using the fastboot command fastboot oem unlock to install a custom firmware. For security reasons, the phone is wiped when this command is executed. However after this is ...
28
votes
1answer
18k views

How do I delete an email in Gmail from the notification screen?

The latest Gmail app update (26 MAR 2013) introduced a feature for devices running Android 4.1 (Jellybean) and higher wherein a user could directly archive / reply to an email from within the ...
28
votes
3answers
4k views

Is it possible to use an Android device as a second monitor?

Sort of like this iPad app. Is there any way to extend your desktop onto your phone or tablet? Not looking for VNC solutions.
28
votes
6answers
145k views

Check and fix SD card errors within Android itself?

Sometimes my SD card gets "corrupted" and this leads to many read/write errors. Usually, connecting the SD card to the windows 7 and selecting the "Error Checking" (Right click the drive > Tools > ...
28
votes
9answers
79k views

How do I use an external microphone with my Galaxy Nexus?

How do I use an external microphone on my Galaxy Nexus, and what kind do I need? I know if it should use a jack plug (3.5 mm), but not all jack connectors are the same, and I don't know if the lower ...
28
votes
6answers
64k views

Why does my Nexus 5 keep forgetting all wifi passwords after a reboot?

A month ago I got a Nexus 5. It's running Android 4.4.2 (kernel:3.4.0-gadb2201). I noticed after using it for a while that it constantly keeps forgetting all saved wifi passwords after a restart. In ...
28
votes
4answers
43k views

Can I automatically log in to open WiFi that requires web login/password?

There are lots of wifi hotspots that are open, but require a web-based login to use. Hotels, coffeeshops, workplaces. For password-protected wifi, it's easy to set up Android phones to remember the ...
28
votes
5answers
8k views

Can I set the schedule for automatic Market updates, e.g. every night?

Is there a way to schedule when the Market updates my installed apps? Ideally I would like to run it late every night, that way I won't have to be bothered with them when I'm actually using the phone.
27
votes
3answers
9k views

Are iOS apps faster than android apps since android apps are interpreted?

Android apps are interpreted rather than compiled. Does this make them slower than iOS apps at runtime?
27
votes
4answers
3k views

How to use GPS to remind me to shop for something?

In my town I have to do a lot of shopping in a lot of different places. Sometimes I find myself wanting to remember to buy some things when I'm passing by a certain place. Is there some easy and ...
27
votes
4answers
2k views

Can there be malicious apps on Google Play?

Do I need to worry about malicious apps on Google Play, or can I trust everything I install, so long as I install it from Google Play? And if I need to worry, what red flags should I look for - ...
27
votes
9answers
156k views

Why am I constantly running out of space on my Galaxy S2?

I have a Galaxy S2 running Android 4.1.2. It has a 12GB internal HD, and a 16GB SD card. I keep getting errors from various programs telling me I am running out of space. BeyondPod won't download new ...
27
votes
6answers
72k views

Is there a way to disable the default calendar app on a Samsung Galaxy S4?

I'd like to use the standard Google Calendar app (as available in the Play Store) too keep track of events. However, Samsung includes a modified version of the calendar on the S4. In previous ...
27
votes
7answers
44k views

Backup and restore Android Settings and Application through ADB

I would like to ask if it possible to backup and restore all Android Settings and applications through ADB. I tried: adb backup -all adb: unable to connect for backup It is not working, while all ...
27
votes
3answers
31k views

How can I avoid the battery charging when connected via USB?

I'm using my Samsung Galaxy S2 for development so I regularly plug it while it's not fully charged, and my phone starts charging over USB. I think this (charging while in use) can affect battery life (...
27
votes
3answers
82k views

Can an Android phone be used as a Bluetooth headset/speakers?

Is there a way to make an Android phone (HTC Desire HD) act as Bluetooth speakers or headset? I'd like to use the phone as wireless headphones whilst watching a movie on a computer (running Ubuntu).
26
votes
5answers
14k views

My phone was just stolen an hour or so ago. Are there any options for tracking?

I realize this is a long shot, but my phone was lost or stolen a few hours ago. At the time it was stolen, I didn't have any specific applications installed to track it or wipe the data. So... my bad....
26
votes
2answers
58k views

What is the default Android Root Password?

What is the default password for the Android root account? Can I change the root password after rooting my android device by simply typing passwd? How does the rooting process work? If I use a "one ...
26
votes
4answers
2k views

Unfortunately (any) app has stopped. What should I report?

When one gets the ever popular "such and such" app has stopped, you get offered the option to report it. What are you supposed to say in the "report"?
26
votes
1answer
4k views

What kind of app optimizations do newer Android versions do at the first reboot?

I received from my phone carrier, Vodafone IT, the official OTA Google update to Android Ice Cream Sandwich 4.0.4 on my Nexus S. When automatically rebooting for the first time after the update, the ...
26
votes
3answers
34k views

Can I re-install a purchased app from Google's Play Store?

I've successfully purchased an app from the Market via my Android phone. It's currently too large for my internal memory (still running 2.1), so can I uninstall it and then re-install it at a later ...
26
votes
5answers
47k views

How can I deal with “Low on Space” messages on my Android?

I keep getting the "Low on Space: Application data space is low. To free up" [the rest is cut off] message. I've moved every app I can over to the SD card, cleared the cache, compacted my K9 mail ...
26
votes
2answers
27k views

What is the /cache partition?

What purpose does the /cache partition in Android serve? Are there any cases where clearing the /cache partition could result in lost data?
26
votes
7answers
117k views

How can I open an HTML file I have copied from PC to SD Card of Phone?

How can I open an HTML file I have copied from PC to SD Card of Phone? I've tried opening it with the default application which is HTML Viewer but I get a "Web page not available" system page. The ...
26
votes
3answers
40k views

How to disable captive portal detection? How to remove exclamation mark on Wi-Fi or signal icon in Lollipop?

When connected to the Internet, the system checks if it's in a walled garden, which is simply trying to connect to Google. If it fails, in Android 5, there'll be an exclamation mark on the WiFi icon ...
26
votes
6answers
9k views

ADB backup creates 0-byte file; prompts for current backup password even though I never set one; “Failed to set password” for Desktop backup password

The problem: Every time I run ADB backup, I get a message near the bottom of the home screen saying Backup starting..., followed by a message saying Backup finished a few seconds later despite the ...
26
votes
1answer
11k views

What are some general tips on improving overall performance of an Android phone?

I was wondering if anyone could share some general tips on speeding up/ improving performance of your phone. I have had my droid eris for about a year now and it seems more sluggish than ever. I ...

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