[অ্যাডভান্সড অ্যান্ড্রয়েড] রুট কী ও কেন, সুবিধা ও অসুবিধা

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Enable Hidden Secret “Developer Options” Menu in Google Android Mobile Phones and Tablets

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We here at AskVG love to find and share hidden secret stuff in mobile phones and other gadgets. Long time back we shared a huge list of hidden secret codes for Google Android mobile phones:
Hidden Secret Codes for Google Android Mobile Phones
Revealing 3 Hidden Secret Modes in Google Android Mobile Phones
The codes given in above mentioned topics help you in accessing several hidden menus and options which are generally accessible to service engineers only. These codes also help you in upgrading device firmware and restoring the device to factory settings.
Today we are going to share another hidden secret stuff for Google Android device users. Many of you might be aware of "Developer Options" menu present in Android mobile phones and tablets. "Developer Options" menu was put in Settings page of Android OS to help developers in testing their apps and other functionality and features of the OS.
In older versions of Android OS (from 2.0 to 4.1), the "Developer Options" menu was directly visible to all users in Settings page. But Google decided to hide the "Developer Options" menu in Android 4.2 Jelly Bean version. The decision to hide the menu was taken so that normal users can't use this advanced menu as it may harm OS functionality and may enable unwanted testing features.
Now in new Android OS versions such as Android 4.2, 4.3 and 4.4, "Developer Options" menu is hidden by default but can be enabled or activated using a secret trick. You can consider it as an Easter egg.
So today in this topic, we are going to share the secret trick to turn the hidden "Developer Options" menu on in new versions of Google Android operating system. With the help of this trick, you can enable "Developer Options" menu in both mobile phones as well as tablets running on Android OS.
If you also can't see the "Developer Options" menu in your Android mobile phone or tablet, just follow these simple steps to activate and enable the menu:

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Secret Android Codes

Secret Android Codes

Kind of like the hidden menu at In-N-Out (if you don’t know what that is, I’m sorry you’re so deprived), there are some nifty hidden codes that can be used to accomplish certain tasks on your Android phone. Some of them do fairly basic, practical things, while others can be used to perform complete alterations, such as factory resets. You should be careful when using some of these codes, because once you do (again, factory reset), they can not be undone.

*#*#4636#*#*

This shows the following information about your phone and battery:

Phone information
Battery information
Battery history
Usage statistics

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How to Unlock Mobile Phones

Edited by Krystyl James, Krystle C., Jack Herrick, Travis Derouin and 67 others

Four Methods:Unlocking Through a Paid ServiceUnlocking Samsung Galaxy 3 and Note 2Unlocking Samsung Galaxy S4Unlocking Old Nokia Phones (DCT3 & DCT4)

Generally phones are unlocked so they can be used on other networks and plan types. For example, you might unlock your AT&T phone to use with a rival post-paid carrier like T-Mobile, or a prepaid carrier such as Straight Talk. Carriers usually won't unlock your phone until your account meets certain requirements. Follow this guide to unlock the latest Samsung phones, old Nokias, as well as information on unlocking through a carrier service. Non-carrier approved unlocks are currently technically illegal in the US.

Method 1 of 4: Unlocking Through a Paid Service

1. 1
   Find a service. There are a large number of companies online that will sell you the unlock codes for your phone for payment
2. 2
   Research your choice. Before paying any company to unlock your phone, research the company as much as possible. Find user reviews, and ask around in phone enthusiast forums. Always be wary of potential scams, especially when you are paying to skirt your carrier's policies.
3. 3
   Pay for the service. Oftentimes, you may have to wait several hours to a couple days in order to receive the unlock code. This is because these companies often have people working for the carriers that provide the codes for them.
   • Be sure to select all of the correct information about your device so that you get a code that works for your phone.
4. 4
   Enter the code. Once you receive the code, insert the SIM card for the new service into the phone. Your phone will prompt you for the unlock code. Enter the code you received and check to make sure that you have connectivity.

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