Galaxy S4 and Motorola CS3070, got paired but NOT connected I am trying to connect my Samsung Galaxy S4 to a Bluetooth scanner Motorola CS3070 unsuccessfully.

Anybody aware of any compatibility issues or fixes?
According to the GS4's specifications, it supports the following Bluetooth profiles only:


PBAP - Phone Book Access Profile
A2DP - Advanced Audio Distribution Profile
AVRCP - Audio/Video Remote Control Profile
HFP - Hands-Free Profile
HSP - Headset Profile
OPP - Object Push Profile
SAP - SIM Access Profile
HID - Human Interface Device Profile
PAN - Personal Area Networking Profile
MAP - Message Access Profile


Your Motorola CS3070 scanner supports the following BT profiles:


HID - keyboard wedge
SPP - Serial Port Profile


I believe the absence of SPP profile support on GS4 could be the reason you cannot properly connect the two devices without additional software.

According to this video, software called "BluePiano" can be used with this scanner model.  In the comments they specifically mention the SPP profile, and that there should be instructions in the scanner's manual on getting it to work with some handsets.