Many people secure their phone's application like WhatsApp, Gallery App, Instagram, Facebook,etc, by using Third-Party Application Lockers like AppLock. These Third-Party apps can easily be disabled.

For example: If you have used AppLock android application to lock WhatsApp then everytime when you open WhatsApp, AppLock will not let you go to WhatsApp until you enter the password/pin or pattern set. This can be easily overridden in Android using one of the drawbacks of Third-Party Applications: Disabling Administrator Access for the app then force stopping the app.

When these Application locker apps are first installed, they have to be granted Administrator Access (or Device Admin) so they cannot be uninstalled or forced stop. But if you want to access the secured app, then you have to disable the Application Locker.

To achieve this: 

1. Go to Settings.
2. Go to Security.
3. Open "Device Admin Apps" or "App with Administrator Acess"
4. Uncheck the option for the app Third-Party Application Locker app (like AppLock).
5. Go back to Settings.
6. Go to Applications.
7. Search the Application Locker app
8. Press "Force Stop"
9. Now you can access secured apps.

This works in any android version for any third-party application locker.

In certain place we may get affected by network problem consequently changing the network modes 2G/3G/4G. To over come this in 4G networked area you can enjoy full 4G speed, by taking the dialer in the phone then type *#*#4636#*#* and go for phone information and enable the network mode into LTE only.

Android "lollipop" 5.0  is a codename for Android mobile operating system. Smartphones are very advanced now. Lollipop is succeeded by marshmallow, which was released in october 2015. Android 5.0 introduces a refreshed notification system. In individual notifications are now displayed on tha lock screen as cards, and "heads up" notifications can also be displayed as large banners across the top of the screen, along with their respective active buttons. A do not disturb feature is also added for notifications. 

As someone whose owned three Android phones over the course of 6 years, there are couple of things you need to do as an Android user to keep your phone healthy. 

Tip #1: Always remember to charge your battery

The batteries used in Android phones are notoriously faulty and will stop working after if they remain without charge for an extended period of time. For long trips, I strongly recommend carrying a personal charger for your Android device. 

Tip #2:  Install a trusted anti-virus app 

Unlike their iOS counterparts; any device using Android can download applications and files directly from the internet. However, this also means that an Android user is more susceptible to viruses from shady sites. To help mitigate the risk of infection, it is strongly recommended that you download an antivirus app from the Google Play store to warn and protect you and you’re device from any malicious software.