Hi there and welcome
this site will do it for you. The link I gave you takes you directly to the page for the Lumia 640. You cannot use your own case, you have to use theirs, no services lets you send it in.
You click Go to Editor and upload and edit the photo ect
The site is here
If you would like any additional information or assistance, please do not hesitate to let me know.
Else if you can take a second to rate my service by clicking one of the stars at the top of the screen then submit, that would be greatly appreciated.
ok, then you need a specialized company.
Call Graphique Media Solutions on 01726 893129
They can print onto any surface, so you can organize to send it in and have them make an offer for you on this.
whats the flip case made of?
And why did they say they could not do it?
ok, there is no site that goes as fully serviced as that, only the one I gave you. Also the Nokias are not very popular so thia adds another challend
This company does print onto Leather though
(0) 20 8960 4567
Call and see if you can send it into them
Else you would need to consider getting it printed onto a durable sticker and then gluing it to the case?
No, they do no printing.
Your going to have to then get it printed on hard felt like this
Click me to open
Then stick it to the case. Its the only option left available