Easily you can Update Your android Os software version From Your Smartphone’s setting menu. its very easy task How To Update Android .
Android always provide new features,more easier, and more fast. So If you use android old version. Now you need to update your Android software version.It helps keep you safe from security threats.
For updating android version you need to make sure that your phone support android latest version.
Before updating your android version you need to backup your phone’s all data (Photos,Videos,Contact Numbers). The upgrade shouldn’t affect your data but there are no guarantees. It is a smart Idea.
so 2 ways to backup your data.
1) backup your data in google account.
Click Setting>Advance setting>Backup & reset Then enable backup my data
2) Backup your data in computer/laptop. connect usb cable from your mobile phone to computer or laptop and transfer your necessery data.
So Now How to Update android version?
Step One: Enable your Wi-fi Connection. Because You need to Turn on Wifi For Update Your android Version. So Click setting App from your Phone Then find Wi-Fi and Enable Wi-Fi.
Step Two: Again Open setting app > Now Find Software Update or System Update.The menu can vary from device to device, but look for and click the ‘Software Update or download or install ‘ or similar button.
Now wait few Minutes. Your devise will search version which are available for your devise.