Iam trying to update payment information. I don't have use of any apple device and apple music will not download on my phone

Hi Greevercc2012

Welcome to the Apple Community.

Re: I am trying to update payment information

Wondering if you have access to iTunes on a PC or Microsoft Surface:

See Apple support's article:

Change your Apple ID payment method if you don't have an Apple device – Apple Support

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Re: apple music will not download on my phone

You might want to see if this helps:

Use Apple Music with your Android devices - Apple Support

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If needed:

Apple's Billing Webpage:

https://support.apple.com/billing

All the best :-)