Linked Questions

5
votes
3answers
59k views

What does the *#*#4636#*#* dialer code do? [duplicate]

Has anyone tried the *#*#4636#*#* or *#*#7780#*#* dialer codes on HTC phones? They're not working for me. Secondly, what does it show, means what kind of information? Is it safe to run on brand new ...
2
votes
1answer
2k views

What special phone numbers can be used to display (hidden) info on Android phones? [duplicate]

Possible Duplicate: Do you know other Android keypad commands ? In another post someone mentioned the special phone number #*#4636#*# to list CPU specific information. I would like to ask you to ...
14
votes
0answers
8k views

What are Android's secret telephony codes? [duplicate]

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: *#*#<...
43
votes
3answers
50k views

How can I fix the GPS on my Samsung Galaxy S?

As has been well documented, the Galaxy S phones have terrible GPS functionality. It works for a minority, but it is slow/inaccurate for some and for others it just doesn't work at all. How can I ...
20
votes
3answers
39k views

How do I turn off the cellular radio without disabling bluetooth?

I have an old Motorola Droid that is no longer subscribed on any Verizon service. I still use it for things like web browsing, ebooks, and along with some wireless stereo headphones, music. I've ...
3
votes
4answers
54k views

How to safely activate LTE on S4 mini (GT-i9195) running 4.2.2?

I'd like to activate LTE on my device: S4 mini with LTE (GT-i9195). There seems to be ways of doing this, but they seem rather "scary" and experimental at best: http://www.androidauthority.com/...
3
votes
2answers
14k views

Typing dialer secret codes in devices other than phones

Dialer secret codes are fun and useful and all the rage, but how can I use them in my tablet, or my TV dongle, or any onther non-phone android device?
7
votes
2answers
17k views

How to change “Preferred Network Mode” using adb without reboot?

I'm trying to change my phone's (CM 12, Stock 4.2, both rooted) preferred network mode from "GSM/WCDMA" (0) to "WCDMA only" (2) and vice versa (there can be other modes too), using command-line only. ...
1
vote
1answer
31k views

How to see hidden files/folders on android internal storage over USB

I have a windows 7 pc and a Sony Experia Z android phone. I use a downloader app to download files to the phone, and then hook it up to USB to copy to the computer. The only problem is sometimes the ...
5
votes
1answer
4k views

How can I save keypad command numbers like `*#*#4636#*#*` to my contact list?

I learned from a previous question of mine that Android has got several system numbers, or "keypad commands," which produce all kinds of information or invoke a system mode. As example: one of them ...
6
votes
1answer
3k views

Is there an official dialer code resource?

There are a ton of XDA forums and a decent number of answers here that refer to specific dialer codes. For instance *#*#4636#*#* will cause unicorns to spring forth from your phone or tell you what OS ...