Upgrade Android 4.4.2 To 9.0

At least 512 MB, though 2 GB is recommended for smooth performance. Storage: Minimum 8 GB of internal space. Battery: At least 60% charge before beginning the process. 2. Back Up Your Data

Either keep your phone on KitKat with lightweight apps, or consider buying a low-cost modern Android device (even a $50 phone runs Android 11+). upgrade android 4.4.2 to 9.0