We're not aware of that particular change at all Gongy as attachments are most certainly able to be received by your device when your email account would be set up correctly. Our network would in no way impeded upon your devices ability to receive documents via email and you would not need to activate any separate features. Have tried removing the email accounts and adding them back to the device? Also, try placing the device in Safe Mode, send a test message and see if we get a different response. See how to enable Safe Mode here http://www.verizonwireless.com/support/knowledge-base-59242/.
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