This question is NOT a duplicate of this question but of an follow-up because the answers over there does not provided any solution for Android version 2.3.X and below.
In that question - Full Backup of non-rooted devices, User
ryan-conrad provided a solution for Android version for 4.X devices. Another user
sachin-shekhar mention using the Odin but from my understanding, Odin is used for flashing and not backup and also many people feel that Odin is still not stable and it is not open source.
Please note that the following requirements:
- Full backup of the phone - No voiding the warranty - No rooting before backup
So, are there any solution to perform Full backup for non-rooted Android version 2.3.X and below devices?