I’ve seen it. A British tourist in Lanzarote asks for breakfast at 10 AM. The waiter says, “you’re on time.” The tourist panics. “But my phone says it’s 11!”
Their phone is lying. It switched to mainland Spain time because of the network. Tricked by technology! Always check the island time manually.
Pro tip: turn off “automatic time zone” on your phone. The Canaries are GMT, not CET. Save yourself the embarrassment.