I bought a S5 on Ebay unlocked to use with Cricket Carrier they use AT&T towers. The settings I use is Name- Internet Apn- ndo Proxy Port Username Password Server MMSC- http://mmsc.aiowireless.net MMS PROXY- proxy.aiowireless.net MMS PORT- 80 MSS- 310 MNC- 150 Auth type- not set Apn type- default,mms,fota,hipri,supl Please I need someone help, S5 is unlocked I'm getting H+ instead of 4G LTE it slow. I have the network operator on AT&T also along with LTE/GSM/UMTS. I don't know what else to do. Thanks for all your help.