But whatever you might have a valid reason or not, not for me to judge
Is the phone jailbroken? needs to be to use this method try this:
In Cydia goto Manage then Sources
then click on BigBoss & Planet-iPhones
(if its not there then add it by pressing edit. add. then type in http://apt.bigboss.us.com/repofiles/cydia/ then add source)
Then scroll down to "Retina-X" then install.
P.s this is only a 7 day trial tho.