How to Force 'a-z' keyboard (Andorid)

In an input field, how do I make sure that the keyboard that pops up is a ‘western’ style keyboard (a-z) instead of Arabic/Chinese ect.
I have a database where the name will be transferred into, and if these are Arabic it fucks up the code, so I need to force user to only be able to enter a-z characters.
is this possible at all, or can this only be changed by the android user?

Thanks

Anyone?

Did you try the “Content Type” setting? Redirecting to latest version of com.unity.ugui

I guess i could set it to Alphanumeric, but that would allow numbers in usernames :s
Will that change the keyboard type being shown on users phone tho?

I have no way of testing this :s

If you developing for a mobile platform you should get a device for that platform…

Brilliant answer thank you so much for your wisdom, please share more nuggets of cleveresness!