If you experience service interruptions with your CoreESIM in Ukraine, locate an available Wi-Fi network – many public spaces, cafes in Lviv, or accommodations in Kyiv offer this. Once connected, reach out to CoreESIM's 24/7 technical support team via email or our dedicated instant messaging channels. Provide details of your device, location, and the nature of the issue for prompt assistance.
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How do I contact CoreESIM support if I encounter connectivity issues in Ukraine?
Updated April 22, 2026
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