Iphone and Apple Watch should show notifications on both devices.

Hi

You are not talking to Apple here - this is a user-based technical support community.

How notifications behave depends on the status of your devices and your settings. With Wrist Detection enabled, in order to bring notifications to your attention as soon as possible:

• If your iPhone is unlocked, then you will receive notification alerts on your iPhone instead of on your Apple Watch.
• If your iPhone is locked or asleep and your Apple Watch is unlocked (regardless of whether the watch display is asleep or awake) and on your wrist, you will receive notification alerts on your watch.
• If your Apple Watch is locked or has Do Not Disturb enabled, then notifications will go to your iPhone.

More information:

Notifications on your Apple Watch - Apple Support

If you turn off Wrist Detection (on your iPhone, in the Watch app, go to: My Watch > Passcode - turn off Wrist Detection), then all notification alerts will be delivered to both devices. However, you will then not be able to benefit from features including Apple Pay, earning Stand credit and a single unlock after placing your Apple Watch on your wrist.

If you would like to submit a feature request to Apple for a settings option that enables notifications to be delivered to both devices irrespective of other settings, then you can do so here:

Feedback - Apple Watch - Apple

For some reason, when my watch is locked, I am not getting notifications on my phone. Would you happen to have any idea why? This just started happening! I just noticed tonight when my watch was off my wrist and in my bedroom, but my phone was with me. I picked it up and had several notifications, that I never heard...they had all gone to my phone. I tested it by sending my self a message with from my husband’s phone, and sure enough it went straight to my watch, even though it was locked and not on my wrist. And suggestions? I have a series 3 and iPhone 8 Plus. Thank you.

You're welcome! 🙂