Hi ​@Yarik1,

Have you tried Manually selecting your network? In Turkey you can choose from:

Networks: 

• Vodafone
• Avea

Here’s how to do it on different devices:

I'm using an iPhone:

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1. Open Settings.
2. Tap Mobile Service (or Mobile Data).
3. Tap Network Selection.
4. Turn OFF the Automatic toggle.
5. Wait for the list to load and select a different network.

I'm using a Samsung Galaxy:

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1. Open Settings.
2. Tap Connections.
3. Tap Mobile Networks.
4. Tap Network Operators.
5. Tap Scan networks (or turn off Select automatically).
6. Wait for the list to load and select a different network.

Most other Android phones:

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1. Open Settings.
2. Tap Network & Internet.
3. Tap SIMs and select your iD Mobile SIM.
4. Turn OFF the Automatically select network toggle.
5. Wait for the list to load and select a different network.

Thanks.