H2O Wireless

For Android

APN : RESELLER

MMSC : http://mmsc.mobile.att.net

MMS proxy : proxy.mobile.att.net

MMS : port 80

MCC : 310

MNC : 410

Authentication Type : None

APN type : default,mms,supl,hipri,admin

APN protocol : IPv4

Bearer : Unspecified

If you are still experiencing issues with the APN settings above, please try this, but make sure your device is compatible with their network https://www.h2owireless.com/3gshutdown :

For Android

APN : RESELLER

MMSC : http://mmsc.mobile.att.net

MMS proxy : proxy.mobile.att.net

MMS : port 80

MCC : 310

MNC : 410

Authentication Type : None

APN type : default,mms,supl

APN protocol : IPv4

Bearer : Unspecified

Simple Mobile

For Android

APN : simple

MMSC : http://smpl.mms.msg.eng.t-mobile.com/mms/wapenc

Authentication Type : none

APN Type : default,mms,supl,hipri,admin

Ultra Mobile

For Android

APN : wholesale

MMSC : http://wholesale.mmsmvno.com/mms/wapenc

MCC : 310

MNC : 260

Authentication Type : none

APN Type : default,mms,supl,hipri,admin