How-to: Maximize Battery Life of Smartphone and Tablet

Step-by-step:

1. Use black wallpaper
If don't have one, you can use mine here.
2. Set low brightness
In Android: Setting >> Display >> Brightness
3. Use no animation
In Android: Setting >> Display >> Animation >> No Animation
4. Take the shortest time to turn off screen when inactive
In Android: Setting >> Display >> Screen timeout >> 15 seconds
5. Disable sound or keep in vibrate mode in some condition
lower your volume button or hold the power button and select silent mode
6. Disconnect wifi when screen turns off
In Android: Setting >> Wireless and Network >> Wifi Setting >> [option] Advanced >> Disconnect wifi when the screen turns off
7. Install battery saver app
I use JuiceDefender and Go Power Saver 

Those are my tips and tricks to maximize battery life based on my experience using several tablets and smartphones e.q: Lenovo IdeaPad A5, Asus Transformer Prime TF-201, Sony Xperia Tab S, Dell Streak Pro, Creative Ziio, Sharp Aquos 101, and Motorola Razr. The following is screenshot of my tablet Asus Transformer using black wallpaper to save battery, and it also shown the icon of battery saver application JuiceDefender.

Screenshot of my tablet: Transformer TF-201

Solving Wifi Problem after update Eee Pad TF201 to ICS 4.0

Eee Pad Transformer Prime TF201 originally came with Android 3.2.1 Honeycomb. However, the company provide the official update to Icecream Sandwich 4.0.

A problem was occurred after I updated the honeycomb to Icecream on my Prime. I can connect to the network via browser but cannot via application such as Google play, Gmail, you tube and others.

I googling to find the solution, but no idea applied. I read the manual book from the internet, and there is a way to factory reset the device. I do that trick.

Setting >> Back up & Reset >> Factory Reset

After that, your prime will reboot and ask you to sign in your Google account. It still works on Icecream and the next you can install application via play, check email via gmail app, and watch video via you tube app.

That works for me! it' s a real solution.