Yes. Even with a VPN, VoIP (voice/video calls) on apps like WhatsApp and FaceTime are often the most difficult services to use, as the networks actively throttle or block them. You should expect texting (on WhatsApp/Telegram via a VPN) to work, but you should not rely on making clear video or voice calls.
HELP CENTER
Does WhatsApp calling work with an eSIM?
Updated April 22, 2026
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