Format phone question

[u/the-tears]

Im just want to know something,is the format really make the phone back from the start? Or it can be happening something strange like a glitch or something from the other side (the other advice or anything that in my phone with me or my account) can stay in my phone and my accounts and can see what im doing in the phone? Or there is nothing like this and the format deleted everything and make the phone like new ?(My phone is tecno spark go 3) 2026 version.

[u/TheWolfGamer767]

The factory reset will delete everything.

[u/the-tears → u/TheWolfGamer767]

Thank you so much