1.Delete all those apps you're not using. You can erase those useless App and app cache permanently with phone data eraser tool. ...
2.Clean up that device storage space. After some time, you'll find a literal crap-ton of "junk" in your storage. ...
3.Clear your cached data. Cached data is generally a good thing. ...
4.Look at your SD card. ...
5.If all else fails, factory reset.
Why you need wipe android data permanently?
Before selling your old android phone into the second-hand market,or give it away,to protect your phone data, you must to erase all data on Android phone permanently; If you Android phone running slowly,because those unless app cache affect the speed; or much useless App installed on your phone? You can erase those App permanently and speed up your Android phone How do erase android data permanently? Today, I will show you two different ways to delete android phone data and cache easily.
Way 1: Erase Phone Data and Cache with Your Android
To begin with, you will be asked to enter the recovery mode and perform the instructions below after flashing your phone into CWM4.0.
Note: While wiping your data, it is quite possible for your phone settings, apps or other files to be deleted and your phone is set back to default factory settings. So, remember to do backup before wiping your data. As long as you have done backup with your Android phone, you can easily get these data back if you want.
Now, let's experience the amazing tutorial on how to wipe data and cache of your phone together:
1. Power off your phone, and press the "Power on" button and the "Home" button simultaneously to enter CWM4 the recovery mode.
2. Hit on "Volume -" button to choose the option – "Wipe data/factory reset" and perform by clicking the "Home" button.
3. Click "Volume -" button and to choose "Yes -- delete all user data" and press "Home" to confirm.
4. If you see the words in white color as the following window shows, it means that you've wipe your phone data successfully.
5. Choose "Wipe cache partition" with "Volume -" and click "Home" to perform it.
6. Then, choose "Yes -- wipe cache" and hit "Home" button to get ready to wipe the cache.
7. As you see the following window, it means you are in the progress of wiping cache
Way 2: Erase Data and Cache from Phone with Phone Transfer
This Phone Transfer is not only tool a useful phone to phone transfer tool for phone users to transfer data between iPhone, Android and Nokia phone,but also can help you erase phone data and cache easily,before selling your old phone,you can use this phone transfer to wipe all data on your mobile phone permanently,if you use iPhone devices,you can read this use guide about how to erase data from iPhone permanently.
Step 1 Install and launch Phone Transfer on Computer
First of all, download and install Phone Transfer on your computer with the buttons below.
Then, launch it. You will see a window as below:
Step 2 Choose “Erase Your Old Phone"
After launching Phone Transfer, you will see four modes listed: “Phone to Phone Transfer” “Restore from Backups” “Back up Your Phone” “Erase Your Old Phone”. To try “Erase Your Old Phone”, you can protect your personal data with the professional data destroyer.
Step 3 Connect Your Phone to the Computer
After connecting your smart phone to the computer, the program will detect your phone and erase all existed data on the phone and deeply search and erase deleted data that still stays in your phone’s memory. After that, you can sell, recycle or donate your phone without worrying data leaking.
Erase All Data on Your Android
That’s it. After wiping data and wiping cache partition, you can move on to do whatever you want. To repeat once again, you'd better backup Android data like contacts, SMS, and other previous data before performing wiping data. If, unfortunately, you lose your phone data while wiping, you can use Android Data Recovery or iPhone Data Recovery (if you use iOS device) to restore these important data back and store them on your computer with easy steps.
For iPhone users: You can Free up Space on iPhone by Removing App Caches,and speed up your iPhone