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Which phone you have will not affect the ability to charge so it sounds like an issue with the Alta.
Is this what you are doing to try and charge?
While the tracker charges, you can tap it to check the battery level. A fully charged tracker shows a solid battery icon.
If this is not working for you then you could try a different USB power source, such as a wall charger you use for a phone.
Once you can get it charged we can try to sort out the connection issue with the Note 8 which should be possible as it's on the list of supported devices at www.fitbit.com/devices
It's not charging at all. All I get on the display is a !. I've tried multiple USB ports and it is connected properly.
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Fitbit Product Experts Alumni are retired members of the Fitbit Product Expert Program. Learn more
An exclamation mark within a battery symbol means it's critically low on power. Fitbit have a help file for troubleshooting charging problems at: https://help.fitbit.com/articles/en_US/Help_article/1190/
Give those steps a try and if they don't work then, as it says at the end, it's probably best to contact customer support.
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