What are Android's hidden Secret Codes?  There are a bunch of secret codes to access hidden features or perform special actions. They're entered into the dialer and have the following format:  *#*#&lt;CODE&gt;#*#*  What are the standard (vanilla) codes and what do various carriers and device makers add?  And how can I find out about them by myself?
124306
There a lots of differents keypad commands in Android. Which one do you know ?  Some of them are listed here :   *#*#checkin#*#*  Phones home to check for updates.  *#*#info#*#* - Enters a detailed phone information menu.  *#*#1472365#*#* : Access to the GPS config menu (useful for patching )
55464
How can I see the hidden files in Finder?  For instance, if I have a file named: .something  is is not listed.  Right now I have to open the terminal and type ls -la.
66101
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 can eat away at a user's data limit set by a mobile carrier. Does Android allow an app to act as a firewall whereby the user can select which apps have access to the Internet? Or does the device have to be rooted to have that ability?
85183
There's PGP public key block posted on some websites (eg. ).  It's not hex code. it uses much more alphabet characters. What is it?  Why is this information posted? how can i use it?
112863
I just received my first  Secret Hat, so I decided to start the traditional Secret Hats and how to get them spoiler question.    Note: Please edit the primary list of secret hats with definitive answers only. If you'd like to discuss the hats further and/or work towards identifying what their triggers are, please do so in chat as the comments here are not meant for extended conversations about them.
17084
Context  I just Skyped with my mother (far away) because her Android tablet (Lenovo IdeaTab S6000, running on Android 4.2) showed a strange menu with Chinese characters, almost like a bootloader. My short troubleshoot history looks like this:   When pressing the volume-keys, the displayed content changed, at one point the text contained "GPS", so I assumed it would be some kind of "hidden troubleshoot menu" for showing system information. A restart was possible after pressing and holding the standby-button, after restarting everything seemed untouched. Just to make sure, we changed her passwords. She did not visit any suspicious websites, nor did she install any apps recently.   With my little knowledge, so far I do not feel able to rule out an attack or a trojan app, from what I can see she could have activated the strange menu by accident. Via internet research I only found one individual with the same problem, but no solution at all.  Question(s)  What can I do to determine the cause? Should I contact the provider/manufacturer? Is it safe to assume that her data &amp; accounts are not compromised?  I know it is little information, so please bare with me, I just want to prevent damage.  Thanks for any advice.  TL;DR  Lenovo IdeaTab showed strange chinese/asian-symbols-menu, gone after reboot, do what now?
18117
A mysterious app named &quot;10102&quot; shows up in my data usage. It bears only the standard Android app icon (the Bugdroid logo with a cube on its torso). From what the graph tells me, it has used 36 megabytes of data in the background and zero on the foreground. I think I haven't uninstalled anything for months. Is it malware? I haven't sideloaded anything and only authorized my laptop as a USB debugger. If it's malware, how do I remove it? I have no idea how to find its package name and 10102 isn't in the list of downloaded apps in settings. I'm running stock &amp; never-been-rooted Android 4.4.4 on Nexus 4.
58192
I'm looking to use a few APIs and many come with keys, secret keys and passwords required to work. Where in WordPress can you store that information? Assuming anyone can hack your DB is there anyway for WordPress to make saving that information more secure? Also, consider the ability to change these keys ever so often so I would need to update the keys on an options page.  UPDATE
23535
Many people refer to Android versions by "codenames" rather than version numbers (e.g. Android "Gingerbread"). What are the names of the various versions of the Android OS, and how are these names chosen?
62852
Whenever I follow a root guide, I see a link to super su and twrp files. Is this super su and twrp file the same file for all phones or is there a different super su for each phone? Also, if it exists for each phone, is it rom specific? Do I need a seperate super su file for cm 13 and stock rom on the same phone?
50002
Is there any kind of guidelines on passcode generation with regards to UX? In particular I just ran into a site that used auto-generated codes but the codes it made were impossible to tell if a letter was a D an O or a 0.  I i l 1 can also be indistinguishable depending on the type style. This would seem like it should be a common UX guideline, never generate codes with those characters. Maybe even U V u v should be removed. g q and 9, 6 and G as well. Next to each other sometimes these are more obvious but in a random code it's not always clear. Do such guidelines exist and are there any other characters that should be avoided? Maybe ! is another one? Note: this question is not about passwords, it's about passcodes (maybe there is another name). A password is something a user can possibly create. A passcode is something a computer creates like emailing you a 6 character code to type in. For example Apple will popup a 6 digit number, a passcode, on an registered Apple device when you try to log into . Apple doesn't have the UX problem above because their passcodes are only digits, no letters.  Conversely some other site had a 10-15 second puzzle to solve, once solved it showed a code  Is that code BB1CA1O8? BB1CA108 ? BB1CA1D8? Get the code wrong and you have to re-fill out the form and solve the 10-15 second puzzle again Note: Obviously if you have 0 and O next to each other you can probably tell them apart. But if you the passcode it shows you is Z35O96 it's not going to be obvious to large percentage of users if that's a letter O or a number zero.
31262
I want to learn how to root a android phone manually, I mean without any apps like KingRoot, dr.fone etc. I did not found any guides or information about it.  (Background Information: I want to root a BlackBerry KeyOne, even if you say it does not work i want to learn and try it anyway)  Can you please help me?
37368
So recently, an absurdly large prime number was found, but a lot of prime numbers less than it are still not known. I am wondering up to where we know all the primes.  I put "currently publicly known" because there is a chance that some government agency has a longer list for crypto reasons or something like that.
12288
I dialed a number when I had no network support but it does not appear in the call history of my android phone.  Is there any way to get it ? (system logs or whatever)  THanks a lot in advance, Jack
114537
Last year I was curious about some hat stats ().  Unfortunately, this data wasn't collectable at the time I asked.  Please consider collecting the data this year.  You could have an interesting blog post about the data analysis.   Things like:   Out of all the people who earned hats on the site, what percentage of users on Android.SE earned the different mobile app hats (and similarly for the Apple.SE) What is the ratio of "Crabby" people to "Red Shirt" (and "I Voted Today")? What was the long term effect of the Resolution hat? (How many comments were deleted? Did this cause any questions to become eligible for roomba deletion having fallen below the "keep because enough comments"?) What rooms had the most Sumo Judge hat recipients?   You know, that sort of thing.  There's a lot of data analysis possible to pull out of the hats and it would be really nice to either save and distribute this data or do it yourself (it could be fun).
87133
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:
18691
Why does my friend only have 138 spaces in his Pokédex, when I have 142 spaces in the Pokédex?    We both play the game on Android and I am pretty sure we both have the same version of the game.  Could it maybe be because my friend got it from Germany while I downloaded the apk? Did I maybe find or hatch special Pokémon that don't appear in the Pokédex before I get them? Is there even more Pokémon? Do I have special powers?