[Atrix 4G Q&A, Help & Troubleshooting] Dr.Jeckyl:
Would this be helpful? This a backup I made for myself and posted about here: http://goo.gl/jZQeh

<apn carrier="2G手机上网" mcc="460" mnc="01" apn="uniwap" proxy="10.0.0.172" port="80" type="default"/>
<apn carrier="2G联通彩信" mcc="460" mnc="01" apn="uniwap" mmsc="http://mmsc.myuni.com.cn" mmsproxy="10.0.0.172" mmsport="80" type="mms"/>
<apn carrier="2G连接互联网" mcc="460" mnc="01" apn="uninet" type="default"/>
<apn carrier="3" mcc="454" mnc="03" apn="mobile.three.com.hk" mmsc="http://mms.um.three.com.hk:10021/mmsc" mmsproxy="172.20.97.116" mmsport="8799" type="*"/>
<apn carrier="3-DB GPRS" mcc="454" mnc="04" apn="web-g.three.com.hk" proxy="10.30.3.151" port="8080" type="default"/>
<apn carrier="3-DB MMS" mcc="454" mnc="04" apn="mms-g.three.com.hk" mmsc="http://10.30.15.51:10021/mmsc" mmsproxy="10.30.15.53" mmsport="8080" type="mms"/>
<apn carrier="3G手机上网" mcc="460" mnc="01" apn="3gwap" proxy="10.0.0.172" port="80" type="default"/>
<apn carrier="3G联通彩信" mcc="460" mnc="01" apn="3gwap" mmsc="http://mmsc.myuni.com.cn" mmsproxy="10.0.0.172" mmsport="80" type="mms"/>
<apn carrier="3G连接互联网" mcc="460" mnc="01" apn="3gnet" type="default"/>
<apn carrier="AT&T US" mcc="310" mnc="410" apn="wap.cingular" proxy="wireless.cingular.com" port="80" type="default,supl,agps,fota,dun"/>
<apn carrier="AT&T US HSDPA" mcc="310" mnc="410" apn="phone" type="default,supl,agps,fota,dun" preferred="true"/>
<apn carrier="AT&T US MMS" mcc="310" mnc="410" apn="wap.cingular" proxy="wireless.cingular.com" port="80" mmsc="http://mmsc.cingular.com" mmsproxy="wireless.cingular.com" mmsport="80" type="mms"/>
<apn carrier="AT&T US Tether" mcc="310" mnc="410" apn="broadband" proxy="wireless.cingular.com" port="80" type="tether"/>
<apn carrier="CMHK GPRS" mcc="454" mnc="12" apn="peoples.net" proxy="172.31.31.36" port="8080" type="default"/>
<apn carrier="CMHK MMS" mcc="454" mnc="12" apn="peoples.mms" mmsc="http://mms.hk.chinamobile.com/mms" mmsproxy="172.31.31.36" mmsport="8080" type="mms"/>
<apn carrier="CSL" mcc="454" mnc="00" apn="hkcsl" proxy="192.168.59.51" port="8080" mmsc="http://192.168.58.171:8002" mmsproxy="192.168.59.51" mmsport="8080" type="*"/>
<apn carrier="CTM Data" mcc="455" mnc="01" apn="ctm-mobile" proxy="192.168.99.2" port="8080" type="default"/>
<apn carrier="CTM MMS" mcc="455" mnc="01" apn="ctmmms" mmsc="http://mms.wap.ctm.net:8002" mmsproxy="192.168.99.3" mmsport="8080" type="mms"/>
<apn carrier="HutchPlus" mcc="455" mnc="03" apn="web.hutchisonmacau.com" proxy="10.30.3.151" port="9201" user="hutchison" password="1234" type="default"/>
<apn carrier="HutchisonMMS" mcc="455" mnc="03" apn="mms.hutchisonmacau.com" proxy="10.30.3.151" port="9201" user="hutchison" password="1234" mmsc="http://10.30.15.51:10021/mmsc" mmsproxy="10.30.15.53" mmsport="9201" type="mms"/>
<apn carrier="MetroPCS" mcc="310" mnc="00" apn="internet" user="*" password="*" server="*" mmsc="http://mms.metropcs.net:3128/mmsc"/>
<apn carrier="Orange AT" mcc="232" mnc="05" apn="orange.world" user="wap"/>
<apn carrier="Orange DE" mcc="238" mnc="30" apn="web.orange.dk"/>
<apn carrier="Orange DR" mcc="370" mnc="01" apn="orangenet.com.do"/>
<apn carrier="Orange IL" mcc="425" mnc="01" apn="internet"/>
<apn carrier="Orange MMS" mcc="208" mnc="01" apn="orange.acte" user="orange" password="orange" mmsc="http://mms.orange.fr" mmsproxy="192.168.10.200" mmsport="8080" type="mms"/>
<apn carrier="Orange NE" mcc="204" mnc="20" apn="internet" user="orange" password="orange"/>
<apn carrier="Orange SUI" mcc="228" mnc="03" apn="internet"/>
<apn carrier="Orange UK 33" mcc="234" mnc="33" apn="orangeinternet" port="8080" user="user" password="pass" type="default"/>
<apn carrier="Orange UK 33 MMS" mcc="234" mnc="33" apn="orangemms" mmsc="http://mms.orange.co.uk" mmsproxy="192.168.224.10" mmsport="8080" type="mms"/>
<apn carrier="Orange UK 34" mcc="234" mnc="34" apn="orangeinternet" port="8080" user="user" password="pass" type="default"/>
<apn carrier="Orange UK 34 MMS" mcc="234" mnc="34" apn="orangemms" mmsc="http://mms.orange.co.uk" mmsproxy="192.168.224.10" mmsport="8080" type="mms"/>
<apn carrier="Orange World" mcc="208" mnc="01" apn="orange" user="orange" password="orange" type="default"/>
<apn carrier="PCCW 3G" mcc="454" mnc="19" apn="pccw" mmsc="http://3gmms.pccwmobile.com:8080/was" mmsproxy=" 010.140.014.010" mmsport="8080" type="*"/>
<apn carrier="PCCW GPRS" mcc="454" mnc="16" apn="pccwdata" proxy="10.131.2.8" port="8080" type="default"/>
<apn carrier="PCCW MMS" mcc="454" mnc="16" apn="pccwmms" mmsc="http://mmsc.mms.pccwmobile.com:8002/" mmsproxy="10.131.2.8" mmsport="8080" type="mms"/>
<apn carrier="Rogers Internet" mcc="310" mnc="720" apn="internet.com" proxy="10.128.1.69" port="80" type="default"/>
<apn carrier="Rogers Media" mcc="310" mnc="720" apn="media.com" proxy="10.128.1.69" port="80" user="media" password="mda01" type="mms"/>
<apn carrier="SMC-Voda" mcc="454" mnc="06" apn="SmarTone-Vodafone" mmsc="http://mms.smartone-vodafone.com/server" mmsproxy="010.009.009.009" mmsport="8080" type="*"/>
<apn carrier="SmarToneMacau" mcc="455" mnc="00" apn="smartgprs" proxy="10.9.9.29" port="9201" mmsc="http://mms.smartone.com.mo/dmog/mo" mmsproxy="10.9.9.29" mmsport="9201" type="*"/>
<apn carrier="T-Mobile A" mcc="232" mnc="03" apn="gprsinternet" user="t-mobile" password="tm" server="*" mmsc="http://mmsc.t-mobile.at/servlets/mms" mmsproxy="010.012.000.020" mmsport="80" type="default"/>
<apn carrier="T-Mobile A MMS" mcc="232" mnc="03" apn="gprsmms" user="t-mobile" password="tm" server="*" mmsc="http://mmsc.t-mobile.at/servlets/mms" mmsproxy="010.012.000.020" mmsport="80" type="mms"/>
<apn carrier="T-Mobile CZ" mcc="230" mnc="01" apn="internet.t-mobile.cz" user="wap" password="wap" server="*" mmsc="http://mms" mmsproxy="010.000.000.010" mmsport="80" type="default"/>
<apn carrier="T-Mobile CZ MMS" mcc="230" mnc="01" apn="mms.t-mobile.cz" user="mms" password="mms" server="*" mmsc="http://mms" mmsproxy="010.000.000.010" mmsport="80" type="mms"/>
<apn carrier="T-Mobile D" mcc="262" mnc="01" apn="internet.t-mobile" user="t-mobile" password="tm" server="*" mmsc="http://mms.t-mobile.de/servlets/mms" mmsproxy="172.028.023.131" mmsport="8008"/>
<apn carrier="T-Mobile NL" mcc="204" mnc="16" apn="internet" user="*" password="*" server="*" mmsc="http://t-mobilemms" mmsproxy="010.010.010.011" mmsport="8080" type="default"/>
<apn carrier="T-Mobile NL MMS" mcc="204" mnc="16" apn="mms" user="tmobilemms" password="tmobilemms" server="*" mmsc="http://t-mobilemms" mmsproxy="010.010.010.011" mmsport="8080" type="mms"/>
<apn carrier="T-Mobile UK" mcc="234" mnc="30" apn="general.t-mobile.uk" user="t-mobile" password="tm" server="*" mmsc="http://mmsc.t-mobile.co.uk:8002" mmsproxy="149.254.201.135" mmsport="8080"/>
<apn carrier="T-Mobile US" mcc="310" mnc="260" apn="epc.tmobile.com" user="none" password="none" server="*" mmsc="http://mms.msg.eng.t-mobile.com/mms/wapenc"/>
<apn carrier="T-Mobile US 160" mcc="310" mnc="160" apn="epc.tmobile.com" user="none" password="none" server="*" mmsc="http://mms.msg.eng.t-mobile.com/mms/wapenc"/>
<apn carrier="T-Mobile US 200" mcc="310" mnc="200" apn="epc.tmobile.com" user="none" password="none" server="*" mmsc="http://mms.msg.eng.t-mobile.com/mms/wapenc"/>
<apn carrier="T-Mobile US 210" mcc="310" mnc="210" apn="epc.tmobile.com" user="none" password="none" server="*" mmsc="http://mms.msg.eng.t-mobile.com/mms/wapenc"/>
<apn carrier="T-Mobile US 220" mcc="310" mnc="220" apn="epc.tmobile.com" user="none" password="none" server="*" mmsc="http://mms.msg.eng.t-mobile.com/mms/wapenc"/>
<apn carrier="T-Mobile US 230" mcc="310" mnc="230" apn="epc.tmobile.com" user="none" password="none" server="*" mmsc="http://mms.msg.eng.t-mobile.com/mms/wapenc"/>
<apn carrier="T-Mobile US 240" mcc="310" mnc="240" apn="epc.tmobile.com" user="none" password="none" server="*" mmsc="http://mms.msg.eng.t-mobile.com/mms/wapenc"/>
<apn carrier="T-Mobile US 250" mcc="310" mnc="250" apn="epc.tmobile.com" user="none" password="none" server="*" mmsc="http://mms.msg.eng.t-mobile.com/mms/wapenc"/>
<apn carrier="T-Mobile US 270" mcc="310" mnc="270" apn="epc.tmobile.com" user="none" password="none" server="*" mmsc="http://mms.msg.eng.t-mobile.com/mms/wapenc"/>
<apn carrier="T-Mobile US 310" mcc="310" mnc="310" apn="epc.tmobile.com" user="none" password="none" server="*" mmsc="http://mms.msg.eng.t-mobile.com/mms/wapenc"/>
<apn carrier="T-Mobile US 490" mcc="310" mnc="490" apn="epc.tmobile.com" user="none" password="none" server="*" mmsc="http://mms.msg.eng.t-mobile.com/mms/wapenc"/>
<apn carrier="T-Mobile US 580" mcc="310" mnc="580" apn="epc.tmobile.com" user="none" password="none" server="*" mmsc="http://mms.msg.eng.t-mobile.com/mms/wapenc"/>
<apn carrier="T-Mobile US 660" mcc="310" mnc="660" apn="epc.tmobile.com" user="none" password="none" server="*" mmsc="http://mms.msg.eng.t-mobile.com/mms/wapenc"/>
<apn carrier="T-Mobile US 800" mcc="310" mnc="800" apn="epc.tmobile.com" user="none" password="none" server="*" mmsc="http://mms.msg.eng.t-mobile.com/mms/wapenc"/>
<apn carrier="U.S.Cellular" mcc="310" mnc="066" apn="internet" user="*" password="*" server="*" mmsc="http://mmsc1.uscc.net/mmsc/MMS"/>
<apn carrier="Verizon" mcc="310" mnc="004" apn="internet" user="*" password="*" server="*" mmsc="http://mms.vtext.com/servlets/mms"/>
<apn carrier="movistar" mcc="214" mnc="07" apn="telefonica.es" proxy="10.138.255.133" port="8080" user="telefonica" password="telefonica" mmsc="http://mms.movistar.com" mmsproxy="10.138.255.5" mmsport="8080"/>
<apn carrier="中華電信 Emome Smartphone" mcc="466" mnc="92" apn="emome" type="default"/>
<apn carrier="中華電信 MMS" mcc="466" mnc="92" apn="emome" mmsc="http://mms.emome.net:8002" mmsproxy="10.1.1.1" mmsport="8080" type="mms"/>
<apn carrier="台湾大哥大 MMS" mcc="466" mnc="97" apn="mms" mmsc="http://mms.catch.net.tw/" mmsproxy="10.1.1.2" mmsport="80" type="mms"/>
<apn carrier="台湾大哥大 MMS" mcc="466" mnc="93" apn="mms" mmsc="http://mms.catch.net.tw/" mmsproxy="10.1.1.2" mmsport="80" type="mms"/>
<apn carrier="台湾大哥大 MMS" mcc="466" mnc="99" apn="mms" mmsc="http://mms.catch.net.tw/" mmsproxy="10.1.1.2" mmsport="80" type="mms"/>
<apn carrier="台湾大哥大 Match" mcc="466" mnc="97" apn="twm" type="default"/>
<apn carrier="台湾大哥大 Match" mcc="466" mnc="93" apn="twm" type="default"/>
<apn carrier="台湾大哥大 Match" mcc="466" mnc="99" apn="twm" type="default"/>
<apn carrier="威寶電信 MMS" mcc="466" mnc="89" apn="vibo" mmsc="http://mms/" mmsproxy="172.24.128.36" mmsport="8080" type="mms"/>
<apn carrier="威寶電信 VIBO" mcc="466" mnc="89" apn="vibo" type="default"/>
<apn carrier="移动互联网" mcc="460" mnc="00" apn="cmnet" type="default"/>
<apn carrier="移动互联网" mcc="460" mnc="02" apn="cmnet" type="default"/>
<apn carrier="移动互联网" mcc="460" mnc="07" apn="cmnet" type="default"/>
<apn carrier="移动彩信" mcc="460" mnc="00" apn="cmwap" mmsc="http://mmsc.monternet.com" mmsproxy="10.0.0.172" mmsport="80" type="mms"/>
<apn carrier="移动彩信" mcc="460" mnc="02" apn="cmwap" mmsc="http://mmsc.monternet.com" mmsproxy="10.0.0.172" mmsport="80" type="mms"/>
<apn carrier="移动彩信" mcc="460" mnc="07" apn="cmwap" mmsc="http://mmsc.monternet.com" mmsproxy="10.0.0.172" mmsport="80" type="mms"/>
<apn carrier="移动梦网" mcc="460" mnc="00" apn="cmwap" proxy="10.0.0.172" port="80" type="default"/>
<apn carrier="移动梦网" mcc="460" mnc="02" apn="cmwap" proxy="10.0.0.172" port="80" type="default"/>
<apn carrier="移动梦网" mcc="460" mnc="07" apn="cmwap" proxy="10.0.0.172" port="80" type="default"/>
<apn carrier="遠傳電信 Internet" mcc="466" mnc="01" apn="internet" type="default"/>
<apn carrier="遠傳電信 MMS" mcc="466" mnc="01" apn="fetnet01" mmsc="http://mms/" mmsproxy="210.241.199.199" mmsport="8080" type="mms"/>