Can I loose data ony iPhone when updating to the new version?

Got loads of pics on there that I don't want to loose?

You should be fine updating provided your phone is on charge and/or is over 50%. Otherwise it shouldn t, but I do recommend charging it even if it is over 50%.

No you will not lose your data but incase you need to back up

Updating always carries the risk of data loss. Backup your phone first.

No you don't but at the same time no harm in doing a backup before hand