Brand new air tag will not stay connected to the phone. Very intermittent even next to the phone. Replaced the battery and same issue. Connects for about 2 seconds then cannot find it.

Hey Mike Adkins,

It looks like you've reviewed: How to reset your AirTag - Apple Support

If you've already tried these specific steps below to reset it and it still won't connect even after a new battery, you'll want to contact Apple Support for assistance.

"Here's how to reset your AirTag:

1. Press down on the polished stainless steel battery cover of your AirTag and rotate counterclockwise until the cover stops rotating.
2. Remove the cover and the battery.*
3. Replace the battery.
4. Press down on the battery until you hear a sound. This sound means that the battery is connected. 
5. When the sound finishes, repeat the process four more times, removing and replacing the battery, then pressing down on the battery until you hear a sound. You should hear a sound each time you press on the battery, for a total of five sounds. The fifth sound is different from the previous four. This indicates that the AirTag is now ready to pair.
6. Replace the cover by aligning the three tabs on the cover with the three slots on your AirTag.
7. Press down on the cover.
8. Rotate the cover clockwise until it stops rotating."

See contact options for Apple Support here:

• Get Support

If you find you're having issues getting connected through the site, you can also call in directly at the number for your country or region:

• Contact Apple for support and service - Apple Support

Cheers!