How do I fix "cannot connect" when calling a German number on a Samsung S25?
Answer
Calls to German numbers often fail because of the dial format (+49 vs leading 0), missing international calling on the plan, or a temporary mobile network glitch. Try the number in international format, then reset the mobile network settings if the error continues.
Before you start: stop right away if…
- Resetting mobile network settings can remove saved Wi-Fi networks and Bluetooth pairings on some phones.
Follow these steps
Dial in international format
Open the Phone app and enter the German number as +49 followed by the rest of the number without the leading 0 that Germans use for domestic dialing. Example pattern: +49 and then city/mobile digits with no spaces.
You should see: The call either connects or fails with a clearer carrier message than before.
Confirm international calling is allowed
Check your carrier account app or recent plan details for international or world calling to Germany. If outbound international calling is blocked, the handset settings alone will not fix it.
You should see: You know whether the plan can place calls to Germany.
Refresh the mobile network
Turn Airplane mode on for about 20 seconds, then turn it off and wait for signal bars and the carrier name to return. Then restart the S25 and try the +49 number again.
You should see: Signal returns and the call is retried on a fresh network registration.
Reset mobile network settings
Go to Settings > General management > Reset > Reset mobile network settings (wording may vary slightly), confirm, then reconnect to Wi-Fi if needed and retry the call.
You should see: Network settings return to defaults and the "cannot connect" error either clears or persists as a carrier-side block.
Contact the carrier with the exact error
If +49 dialing and a network reset still fail, contact your carrier and report the destination country, the exact number format tried, and the "cannot connect" message.
You should see: The carrier can enable international calling or explain a block on that route.
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Extra tips
What to look for: The exact "cannot connect" message, whether emergency calls still work, and how the German number is typed (+49… versus 0…)
Before you change anything: Write down the full number exactly as you intend to dial it. Confirm whether your mobile plan includes international calling to Germany. Note that Reset mobile network settings will remove saved Wi-Fi passwords on many Samsung phones. Never share account passwords or codes with unexpected callers.