# iPhone Calendar Not Updating With Outlook? Do This

> Switch to Wi-Fi. For iPhone and Outlook calendars to sync properly, the data needs to be sent to the online servers, then re-downloaded to the other device.

- **Source:** [Lifewire](https://www.lifewire.com/fix-iphone-calendar-not-syncing-with-outlook-11911686?utm_source=gearopen.com&utm_medium=referral&utm_campaign=feed&utm_content=6a0f25793d03cf1317097ae1)
- **Published:** 2026-05-21
- **Category:** Phones
- **Tags:** #battery #iphone #outlook #calendar #data #updating #cellular #connecting
- **Canonical:** http://localhost:4321/a/6a0f25793d03cf1317097ae1

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_GearOpen's distilled summary. The full original article is published at Lifewire (source link above); GearOpen does not republish the source's full text._