You'll need to set to LTE/GSM/WCDMA , there are some NV edits that need to be made for LTE as well as two APN's (one with LTE as bearer). I also edited my apns.conf and telephony.db. I have successfully got LTE and MMS to work, however as idone said when LTE picks up MMS goes crazy. Simple reboot temporarily fixes this. NV edits you def have to be careful doing.what nv edits are these? i did two s6 and one s6 edge with this app and didn't have to do anything much beyond set apns and i got LTE fine...the note 5 is a tad different i'm finding
https://forum.xda-developers.com/showpost.php?p=56577252&postcount=455 Use that as a reference for NV edits. You do not need the storage patch, obviously. Handcent with manual apn for mms fixes the MMS issue as well.