TYPO3 Core

Upload in dialog or in FileList should
use at least php.ini-setting from webpages root of typo3.
Install tool should check this on installation.

upload_max_filesize=
max_execution_time=
post_max_size=

should be taken into account from typo3 7.0 and earlier versions.

Install a fresh typo3 7.0, put these lines into php.ini
in webpages root of the typo3 installation:

upload_max_filesize=24M
max_execution_time=240
post_max_size=24M

Try to upload some pictures.
You will get 2048 KB at max,
the internal settings of typo3.

Thats not very smart of
typo3 as of version 7.0 ...
Its modern and good looking skin should
have modern and good working functions.