Does a software update affect data? I recently bought an Android smartphone, Samsung Galaxy Core (Model GT-I8262), checked for updates to the software(4.1.2). The package files were downloaded and when it was about to install, it displayed the precautions to take, before installing the update.

After installation, would it erase the contacts stored in my sim card or any other data on my smartphone? 


  Phone info:


Manufacturer : Samsung

Model : GT-I8262

Android Version : 4.1.2
No it doesn't but make sure you perform backup's before updating.