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APN settings for Alcatel Volta (copied from my phone)
Name:H2O Wireless
APN: RESELLER
MMSC: http://mmsc.mobile.att.net
MMS proxy:...

Kroger has the ATT Prepaid Alcatel Volta for $29.95. (Houston,TX area)
Put H2O SIM in it, works great. Had to edit the APN settings.
The Volta works as well as the Samsung phone that ATT didn't...