Here are some android customizations which you can do without rooting your phone…
Tweaking Your Home Screen
The home screen is the most visited screen on any smartphone. If you want to personalize your device, this is where you want to begin. Nothing says “This is my phone!” more than a home screen tailored to your tastes.
Install an icon pack
One way to solidify the thematic feel of your home screen is to replace all of the app icons with a unified icon pack. It’s a small change that can inject a lot of life into your device.
Install a live wallpaper
No matter how beautiful they are, static wallpapers lose their appeal over time. On the other hand, live wallpapers feel dynamic and interesting. Try these awesome Android live wallpapers to see if it’s something you enjoy.
If you’re worried about battery life, you can relax. Except in rare cases, live wallpapers are relatively light on battery drain. Worse comes to worst, you can uninstall it if it proves problematic.
Tweaking Your Lock Screen
The next aspect of Android worth customizing is the lock screen — assuming you even use a lock screen to begin with (which you should). Wouldn’t it be great if you could interact with certain areas of your phone without having to unlock it every time?
Tweaking Your Battery Life
While vibrations are less disruptive than loud ringtones, they actually use up more battery life. Depending on how often your device buzzes, you could end up wasting a lot of juice this way — so disable it. That includes haptic feedback when typing, vibrating notifications, etc.
Purge all bloatware
Bloatware describes apps that might be useful if they didn’t take up an exorbitant amount of resources, whether that means RAM, CPU, disk space, etc. Even if you don’t actively use these apps, they can sit in the background and impact performance or waste bandwidth.
Use Airplane Mode
Airplane Mode disables all forms of network communication, including 2G, 3G, 4G, and WiFi. While disabled, those network components cease to drain battery life.
If you really need to squeeze extra juice out of your device, consider toggling Airplane Mode whenever there’s going to be an extended period of time where you won’t be using the network.
Tweaking Your Security
Smartphone and tablet security should always be a prime concern, especially if you have sensitive data stored within. In this context, sensitive data is anything that you wouldn’t want a stranger to see.
Always use a lock screen
Passwords are always the first line of defense against somebody who gains access to something that doesn’t belong to them. Would you use a debit card that has no PIN? Would you buy a car that has no key lock? If you want to protect your phone, lock it!
Consider anti-theft apps, too
Antivirus only gets you so far. What happens if you leave your phone somewhere? Or worse, if somebody picks your phone right out of your pocket? Without an anti-theft app, you may as well consider your phone to be gone for good.
Tweaking Your Communication
Lastly, let’s tweak your communication settings to be as productive and pleasant as possible. When you’re browsing the web and sending out text messages all throughout the day, even the smallest improvement can wipe away your frustrations.
Install a better keyboard
If you spend any time at all typing on your device, it’s worth upgrading to a dedicated keyboard app that replaces the default one. There are a few free ones out there, but this is one area where shelling out a few dollars for a paid app can make a difference.
Tweak Your Notification LED
Light flow allows you to take control of the notifications on your device without root. You can change the color and rate of blinking of LED light. You can download the paid version of light flow here.
INSTALL HUNDREDS OF CUSTOM THEMES ON YOUR ANDROID WITHOUT ROOTING
First visit the Google play store app on your device and search for the Themer app and install it. You can find the direct download link of the application at the end of this post. Once the application is installed on your device, run the application and you’ll be greeted with a few welcome screens that’ll provide you with some general info. On the next page you can see some of the best custom theme in different categories. In each categories you will see some of the best themes with wallpapers. When you find a theme you like, just select it to download and apply. Once the theme is applied on your device you can see the new theme on your home screen with new icons and lock screen.
Huawei Phones Tweaks
Huawei phone owners can do a lot more than others. Huawei has its own theme app preinstalled and it has hundreds of themes. Also they are updated regularly. You can install them from theme app and apply. They change not only your icons but also lockscreen style and quicksettings panel and other apps like sms app, dialer app,settings app etc.
Huawei users can also change other settings of their phones like status bar icons, quick settings icons, their colors, notification panel background, settings app background, navigation bar icons and even their font style by using an app called EMUI theme editor. Just install this app and edit the themes you have downloaded from theme app.