If you want to receive calls during the night, but don't want to be woken up by notifications like text messages, then you can turn notifications to silent.
Go to Settings - Sounds. Then change notifications to silent.
From the Contact list or the Messaging list, swipe from Left to Right to call a Contact.
This might not work on all models.
To save an image in an email or in the browser, long press on the image and a menu will appear allowing you to save it.
For images inside text messages, you might have to press and hold on the message itself, rather than the image.
To stop the Photo App or the Music player from indexing your files, place a blank text file called .nomedia in the folder containing your photos or music
To access the scientific calculator, rotate the phone to landscape mode.
The calculator will change to a scientific one.
Face Unlock allows you to unlock your phone by holding it up to your face. It is highly recommended to use the Improve Face Unlock feature to make the recognition faster and more accurate.
First, ensure you have Face Unlock enabled. Go to Settings - Security - Screen lock. Then choose Face Unlock.
Once that is done go to Settings - Security - Improve face matching. You might have to do this a few times to improve the speed of recognition. It is also a good idea to position the phone at different angles to your head to improve the accuracy.
Note: this may not work on all phones. Check for a software update if it doesn't work on yours.
While in your Browser App, press and hold the Back button.
This will show your browser History and Bookmarks.
We produce a great list of the best mobile phone accessories and if you have purchased a smartphone, one of the first things you will want to do is accessorise it. Our guide shows you the best accessories and the best places to buy them from.
Simply go to the menu at the top of this page and select: Phone Guides - Best Cell Phone Accessories (for US users) or Best Mobile Phone Accessories (for UK users).
To copy files between your phone and PC, go to the Android Play Market and download an app called AirDroid.
This is an extremely useful App that connects your phone to your PC wirelessly, allowing you to move files and many, many other things.
WARNING: Making your volume or music louder can damage your hearing.
Most phones have their volumes limited by local laws to protect our hearing. There is a way to boost your volume however. Go to the Android Market and download an App called Volume+ (Sound Boost). There is also a free version called Volume+ Free.
You will need to root your phone for this App to work.