How should the internet settings of Turkcell MultiVınn and Vınn devices be adjusted?

We replaced the MultiVınn device I was using (just the device, not the data line) with the Vınn device Cengiz uses. Recently, I started using the TP-Link MR3420 device he reviewed.

Cengiz had configured the device and tested the connections, but I couldn’t connect to the internet with the Vınn device I inserted my SIM card into.

The connection settings for Cengiz’s data line were as follows:

If you will connect your data line to the internet using another device, such as a 3G router like ours, you should configure your settings as follows.

Setting 1:

Dial Number: *99#
APN: MGB

Setting 2:

Dial Number: *99#
APN: INTERNET