I need my dpi higher

I have a selection of prints that initially were 300 DPI they’ve been kept on a mobile phone for years and I need them turning back to 300 DPI they’re currently approximately 75 DPI. I have a lot of prints. I would say 100 altogether so I need somebody who can do me a good price to do them all these prints has to be printed on the fabric. Please can you help?

Budget: GBP 55 (Fixed Price)

Proposals: 28 freelancers have applied