Although currently Research In Motion’s BlackBerry dominated the corporate sector, it would appear BlackBerry is losing its vice-like grip on the business sector as more and more businesses look towards the iPhone and Android platform for their corporate needs.

And it appears that BlackBerry is in line to lose a couple of big businesses, as according to an article over on Afterdawn by Andre “DVDBack23” Yoskowitz, Bloomberg has reported that JPMorgan Chase is considering alternatives to BlackBerry for their corporate email and testing the iPhone and Android smartphones.

The move from BlackBerry by JPMorgan Chase could be significant as the bank employs 220,000 workers worldwide. Furthermore Switzerland’s largest bank, UBS is apparently also testing the iPhone with a view to replacing BlackBerry for their 63,000 employees.

Sanford C. Bernstein Ltd analyst, Pierre Ferragu has said, “This phenomenon is very new and we expect it to put increased pressure on RIM’s performance. BlackBerry isn’t the only alternative to offer employees mobile e-mail.”