What does an android phone mean?
Android is an open source and Linux-based Operating System for mobile devices such as smartphones and tablet computers. Android was developed by the Open Handset Alliance, led by Google, and other companies.
Android offers a unified approach to application development for mobile devices which means developers need only develop for Android, and their applications should be able to run on different devices powered by Android.
The first beta version of the Android Software Development Kit (SDK) was released by Google in 2007 where as the first commercial version, Android 1.0, was released in September 2008.
On June 27, 2012, at the Google I/O conference, Google announced the next Android version, 4.1 Jelly Bean. Jelly Bean is an incremental update, with the primary aim of improving the user interface, both in terms of functionality and performance.
The source code for Android is available under free and open source software licenses. Google publishes most of the code under the Apache License version 2.0 and the rest, Linux kernel changes, under the GNU General Public License version 2
Android operating system
An Android phone is a powerful, high-tech smartphone that runs on the Android operating system (OS) developed by Google and is used by a variety of mobile phone manufacturers. Pick an Android mobile phone and you can choose from hundreds of great applications and multitask with ease
Sometimes to find things on your android device, you have do dig down many settings & android certificates to find what you are looking for. Suppose you want to perform a hardware test, there are many apps on playstore that can do this; but if you want to use the inbuilt feature to do that, most of us don’t know what’s the actual code for it. Android “Secret” codes which will help you to find your phone information and also helps you to troubleshoot some problems.
The code entry procedure is very simple and only requires you to bring up your dialer keypad and enter the appropriate number sequence. Bear in mind that some codes are carrier-specific, and won’t work on all devices.So if your phone doesn’t respond to a code, don’t dwell on it, just move on and find another one.
History of Android
The code names of android ranges from A to N currently, such as Aestro, Blender, Cupcake, Donut, Eclair, Froyo, Gingerbread, Honeycomb, Ice Cream Sandwitch, Jelly Bean, KitKat, Lollipop and Marshmallow. Let’s understand the android history in a sequence.
Features of Android
Android is a powerful operating system competing with Apple 4GS and supports great features. Few of them are listed below −
| Sr.No. | Feature & Description |
|---|---|
| 1 | Beautiful UIAndroid OS basic screen provides a beautiful and intuitive user interface. |
| 2 | ConnectivityGSM/EDGE, IDEN, CDMA, EV-DO, UMTS, Bluetooth, Wi-Fi, LTE, NFC and WiMAX. |
| 3 | StorageSQLite, a lightweight relational database, is used for data storage purposes. |
| 4 | Media supportH.263, H.264, MPEG-4 SP, AMR, AMR-WB, AAC, HE-AAC, AAC 5.1, MP3, MIDI, Ogg Vorbis, WAV, JPEG, PNG, GIF, and BMP. |
| 5 | MessagingSMS and MMS |
| 6 | Web browserBased on the open-source WebKit layout engine, coupled with Chrome’s V8 JavaScript engine supporting HTML5 and CSS3. |
| 7 | Multi-touchAndroid has native support for multi-touch which was initially made available in handsets such as the HTC Hero. |
| 8 | Multi-taskingUser can jump from one task to another and same time various application can run simultaneously. |
| 9 | Resizable widgetsWidgets are resizable, so users can expand them to show more content or shrink them to save space. |
| 10 | Multi-LanguageSupports single direction and bi-directional text. |
| 11 | GCMGoogle Cloud Messaging (GCM) is a service that lets developers send short message data to their users on Android devices, without needing a proprietary sync solution. |
| 12 | Wi-Fi DirectA technology that lets apps discover and pair directly, over a high-bandwidth peer-to-peer connection. |
| 13 | Android BeamA popular NFC-based technology that lets users instantly share, just by touching two NFC-enabled phones together. |
What are the different types of Android phones?
The best Android phones you can buy today
- Samsung Galaxy S21 Ultra. The best premium Android phone. …
- OnePlus 9 Pro. The best Android phone you can get. …
- Google Pixel 5a. The best Android experience under $500. …
- Samsung Galaxy Note 20 Ultra. …
- OnePlus 9. …
- Moto G Power (2021) …
- Samsung Galaxy S21. …
- Asus ROG Phone 5.
Android Applications
Android applications are usually developed in the Java language using the Android Software Development Kit.
Once developed, Android applications can be packaged easily and sold out either through a store such as Google Play, SlideME, Opera Mobile Store, Mobango, F-droid and the Amazon Appstore.
Android powers hundreds of millions of mobile devices in more than 190 countries around the world. It’s the largest installed base of any mobile platform and growing fast. Every day more than 1 million new Android devices are activated worldwide.
This tutorial has been written with an aim to teach you how to develop and package Android application. We will start from environment setup for Android application programming and then drill down to look into various aspects of Android applications.
Categories of Android applications
There are many android applications in the market. The top categories are −
ANDROID PROBLEMS SOLVING CODES
To enter these codes just pull up the default dialer app and use your chubby fingers to press the correct buttons.
| Code | Description |
|---|---|
| *#*#4636#*#* | Display information about Phone, Battery and Usage statistics |
| *#*#7780#*#* | Restting your phone to factory state-Only deletes application data and applications |
| *2767*3855# | It’s a complete wiping of your mobile also it reinstalls the phones firmware |
| *#*#34971539#*#* | Shows completes information about the camera |
| *#*#7594#*#* | Changing the power button behavior-Enables direct poweroff once the code enabled |
| *#*#273283*255*663282*#*#* | For a quick backup to all your media files |
| *#*#197328640#*#* | Enabling test mode for service activity |
| *#*#232339#*#* OR *#*#526#*#* | Wireless Lan Tests |
| *#*#232338#*#* | Displays Wi-Fi Mac-address |
| *#*#1472365#*#* | For a quick GPS test |
| *#*#1575#*#* | A Different type GPS test |
| *#*#0283#*#* | Packet Loopback test |
| *#*#0*#*#* | LCD display test |
| *#*#0673#*#* OR *#*#0289#*#* | Audio test |
| *#*#0842#*#* | Vibration and Backlight test |
| *#*#2663#*#* | Displays touch-screen version |
| *#*#2664#*#* | Touch-Screen test |
| *#*#0588#*#* | Proximity sensor test |
| *#*#3264#*#* | Ram version |
| *#*#232331#*#* | Bluetooth test |
| *#*#7262626#*#* | Field test |
| *#*#232337#*# | Displays bluetooth device address |
| *#*#8255#*#* | For Google Talk service monitoring |
| *#*#4986*2650468#*#* | PDA, Phone, Hardware, RF Call Date firmware info |
| *#*#1234#*#* | PDA and Phone firmware info |
| *#*#1111#*#* | FTA Software version |
| *#*#2222#*#* | FTA Hardware verion |
| *#*#44336#*#* | Displays Build time and change list number |
| *#06# | Displsys IMEI number |
| *#*#8351#*#* | Enables voice dialing logging mode |
| *#*#8350#*#* | Disables voice dialing logging mode |
| ##778 (+call) | Brings up Epst menu |
Testing Menu Code
The *#*#4636#*#* code is the most common one that people will use. There’s quite a bit of information you can pull up in this hidden menu. Here are some screenshots of what you should see once you punch in this code
