It would be helpful to see a couple of examples of cell phones this will work with, and won't work with (I'm particularly interested in the S4)
1787053
I have tested with the iPhone 5 running a jailbroken version of iOS 7.1 and it works great!
1762876
I have the Note 3. It's not to bad In spite of the rather large phone. Im sure the S4 should work fine.
402379
I have the Galaxy S5. It works but my phone doesn't fit in the space for phones. But I guess I can live with it.
401870
I frankly don't see any reason why any of the items in this kit wouldn't work for ALL Samsung S4 phones, regardless of the carrier.
980516
I'm not sure about the S4. You just need to make sure what type of plug is on the S4. If this one won't work I'm sure that you can find something that can.
517346
It works for my note 3, so I don't see why it wouldn't be able to work for the S4, but that's just conjecture om my part
1405627
I doubt it as it wasn't compatible with the s4 unless it had another adapter on the end of it!
1561923
I've not tried it with S4 or iPad because I don't have one. But I'm getting my S4 in October, I'll sure test it and post my findings.
587211
While it may charge, I had data transfer issues with this older style cable on an S3 so I'm going to say the same would probably happen on a even newer phone.
2163224
Sorry I bought it to use only with samsung s4, and with this device it works fine
1778698
I only tried it in the GalaxyS4. It wasn't a problem with what we were using it in, the one they sent us was broken and unusable.
16156
No idea, but I bet they make one for the s4. You could probably look up the dimensions of both phones on the net and compare them.
1075685
This particular product has its successes and its failures, in my experience, this product was unsuccessful for my galaxy S4.
2012280
It works with my Galaxy S3 running CyanogenMod 11 (so I have Bluetooth LE support). Many, probably most, Android phones do not support LE either because it's not in the hardware or it's running a version of Android earlier than 4.3
1786826
I don't have a s4, but have a note 2. This is a HTC connector, Samsung uses mini USB, so it doesn't work with note2, most likely not the s4 as well.
135446
Hello. Thank you for your interest in this item. It was tested with iPhone and Android phones and was working with both platforms.
488951
Worked with minor issues in an S4 (when programmed for Verizon, constantly reminded me that I had an "unidentified" SIM card, but still made calls); see no reason why the S3 should be different.