Root [MetroPCS] Remove T-Mobile MMS signature?

[mrsnipeypants]

When sending an MMS message to an email, I'm wondering if there's a way to prevent the T-Mobile image signature ("This message was sent to you from a T-Mobile wireless device") from getting attached.
Doesn't appear to be a way to turn it off in settings.
Thanks for any help!

 

[DealerMan]

I'll try to help, but my knowledge is limited (and my phone is a Metro model). Is the signature an actual picture (jpg/bmp/png)? If so, and your phone is rooted, open your root browser, and do a search for those extensions. If you can't get any results that way, look for any folders that have mms/sms. They may be in your /system folder (I have no mms/sms folder on mine though). If you're certain you've found it, change the name to something like sigbackup (I wouldn't delete it, just in case something weird happens).

Hopefully someone will respond that knows more than I if you can't find anything.

Good luck!